S Glossary Terms

S-1 is a cancer drug being studied to improve the effects of fluorouracil, a common chemotherapy medicine, while reducing some side effects. It belongs to a group called antimetabolites, which work by interfering with cancer cell growth. S-1 is not yet a standard treatment and is usually available only through clinical trials. Patients should talk with their care team to understand if S-1 might be relevant to their treatment.

S-phase fraction is a measure of the percentage of tumor cells that are copying their DNA, a key step in cell division. It helps doctors understand how quickly a tumor might be growing. This number is often used together with the proliferative index, which shows how many cells are actively dividing. Patients should discuss what these results mean for their specific case with their care team rather than interpreting the term alone.

S100 Calcium Binding Protein A8, also called Calgranulin A, is a protein made by many types of cells. It helps cells respond to changes inside and outside themselves. Levels of this protein can rise during inflammation and in some cancers. Researchers are studying it as a possible marker to help detect or monitor breast cancer, but it is not yet a routine test in cancer care.

S100 Calcium Binding Protein A9, also called Calgranulin B, is a protein made by many types of cells. It plays a role in inflammation and can be found in higher amounts in some inflammatory diseases and certain cancers. While researchers are studying it as a possible marker for cancer, it is not yet a routine test in cancer diagnosis or treatment.

SAB, also called spinal anesthesia, spinal block, or subarachnoid block, is a type of regional anesthesia that temporarily numbs the lower part of the body. It is often used during medical procedures to block pain while the patient stays awake. In cancer care, SAB may be part of treatment or surgery plans and appears in medical reports under various names, so it’s important to ask your care team what it means for you.

SABR, also called SBRT or stereotactic body radiation therapy, is a precise type of external radiation treatment that targets tumors in the body (except the brain). It uses special equipment to carefully aim radiation, helping protect nearby healthy tissue. The total radiation dose is divided into smaller doses given over several days. If you see this term, ask your care team how it applies to your treatment plan.

Sacituzumab govitecan, also known as Trodelvy, is a targeted cancer drug used to treat certain types of advanced breast cancer. It is approved for adults with triple-negative breast cancer or hormone receptor–positive, HER2–negative breast cancer who have already tried other treatments. This drug combines an antibody that targets cancer cells with a chemotherapy drug to help kill them. It is also being studied for other cancers.

The sacrum is a large, triangle-shaped bone at the lower end of the spine that connects to the pelvis. It is made of five fused bones and helps support the spine and body weight. In cancer care, tumors sometimes form near or in the sacrum, so understanding this bone’s location can help patients and caregivers discuss diagnosis and treatment with their care team.

Safingol, also called L-Threo-Dihydrosphingosine, is a substance being studied as a possible cancer treatment. It belongs to a group of drugs called protein kinase inhibitors, which affect proteins involved in cancer cell growth. Safingol is not yet a standard treatment and is mainly seen in research or clinical trial settings. If you encounter this term, ask your care team how it relates to your care.

SAHA, also known as suberoylanilide hydroxamic acid, vorinostat, or Zolinza, is a drug used to treat certain types of cancer. It works by blocking enzymes that cancer cells need to grow and divide. SAHA is approved for treating cutaneous T-cell lymphoma that has not improved or has returned after other treatments. It may also be studied for other cancers. Patients should discuss with their care team how SAHA might apply to their specific situation.

Saline is a simple solution of salt and water, often called saltwater. In cancer care, saline is commonly used in medical treatments and procedures, such as filling breast implants after mastectomy or as part of intravenous fluids. Understanding what saline means in your care can help you ask the right questions and feel more informed about your treatment plan.

Saliva is the clear, watery fluid made by your salivary glands in the mouth. It helps moisten food for chewing and swallowing, contains enzymes that start digestion, and has minerals and antibodies that protect your teeth and mouth from germs and decay. Saliva is important for keeping your mouth healthy and comfortable.

Salivary glands are parts of the mouth that make saliva, which helps with chewing, swallowing, and protecting the mouth. Salivary gland cancer is rare and may cause a lump, trouble swallowing, or facial pain. Doctors use exams, imaging, and biopsy to diagnose it. Treatment and outlook depend on the cancer’s size, location, cell type, and the patient’s health. If you have symptoms or concerns, talk with your care team for personalized information.

Salivary gland cancer is a rare type of cancer that starts in the tissues of the salivary glands, which produce saliva to help with chewing, swallowing, and protecting the mouth. Symptoms may include a lump near the ear, cheek, or inside the mouth, trouble swallowing, or facial numbness. Diagnosis involves exams, imaging, and biopsy. Treatment options depend on the cancer’s type, stage, and patient health.

Salpingo-oophorectomy is surgery to remove the fallopian tubes and ovaries. It is often done to lower the risk of ovarian and fallopian tube cancers, especially for people with inherited gene changes like BRCA mutations. This surgery can also be part of cancer treatment. Removing these organs affects hormone levels and causes infertility. Patients should discuss with their healthcare team how this surgery fits their personal health needs.

Salvage therapy is treatment given after cancer has not responded to standard treatments. It is often considered when other options have failed. For example, vinflunine (brand name Javlor) is a chemotherapy drug approved in some countries as salvage therapy for bladder cancer. Patients should always ask their care team how salvage therapy applies to their specific situation rather than assuming it is a diagnosis or guaranteed treatment.

Samarium Sm 153 is a radioactive substance used in a medicine called Quadramet. It collects in bones affected by cancer and releases radiation that may help kill cancer cells and relieve bone pain. It is given through a vein and is often used for cancers that have spread to the bones, such as prostate, breast, or lung cancer. Always ask your care team how it applies to your specific situation.

Samarium Sm 153-Lexidronam Pentasodium, also called Quadramet, is a medicine that contains a radioactive substance. It collects in bones affected by cancer and releases radiation that may help relieve bone pain and kill cancer cells. It is given through a vein and is often used for cancers that have spread to the bones, such as prostate, breast, or lung cancer.

Sample size is the number of people or participants included in a research study or clinical trial. A larger sample size usually gives stronger and more reliable results. For patients and caregivers, it’s important to understand sample size in context and ask the care team how it relates to individual care, rather than seeing it as a diagnosis or treatment decision by itself.

Sancuso is a brand name for granisetron, a medicine used to prevent nausea and vomiting caused by chemotherapy. It works by blocking serotonin, a chemical that can trigger these symptoms. Sancuso is available as a skin patch, and related forms include Sustol, a long-acting injection. These medicines help patients manage side effects during cancer treatment.

Saponins are natural substances found in many plants, including soybeans. They may help lower cholesterol and have potential anticancer effects. Saponins are also used in some vaccine ingredients to boost the immune response. For patients and caregivers, it’s important to understand saponins in context and ask your healthcare team how they relate to your care, rather than assuming they are a treatment or diagnosis on their own.

Saquinavir Mesylate is a drug in the protease inhibitor family. It works by blocking a virus’s ability to make copies of itself. Patients may encounter this term in medical discussions or reports. It’s important to understand how it applies personally by talking with your care team, rather than assuming it is a diagnosis or treatment on its own.

Sarclisa (isatuximab) is a targeted cancer medicine used to treat multiple myeloma, a type of blood cancer. It is a monoclonal antibody that attaches to a protein called CD38 on cancer cells, helping the immune system attack them. Sarclisa is given with other cancer drugs and is approved for adults with certain types of multiple myeloma, especially when other treatments have been tried.

Sarcnu, also known as Sarcosinamide Nitrosourea, is a substance studied in cancer treatment. It belongs to a group of drugs called alkylating agents. Patients may see this term in medical reports or educational materials. It’s important to understand Sarcnu in the context of your own care and ask your healthcare team how it relates to your diagnosis or treatment plan.

Sarcoid, also called sarcoidosis, is an inflammatory disease where small clusters of immune cells called granulomas form in organs like the lungs and lymph nodes. It can be mild and go away on its own or become chronic. Sarcoid can sometimes be confused with cancer or infections because it affects lymph nodes and other tissues. Treatments may include steroids or other medicines to reduce inflammation.

Sarcoidosis is an inflammatory disease where small clumps of immune cells called granulomas form in organs like the lungs and lymph nodes. It can cause symptoms like cough, skin rashes, joint pain, or no symptoms at all. Treatment aims to reduce inflammation and manage symptoms, and regular follow-up is important to watch for complications.

Sarcoma is a type of cancer that starts in bones or soft tissues like muscle, fat, blood vessels, or connective tissue. It can occur in both adults and children. Different types of sarcoma are named based on where they begin, such as osteosarcoma in bone or liposarcoma in fat. Treatment and outlook depend on the specific type and how advanced the cancer is.

Sarcomatoid carcinoma is a rare type of cancer that has features of both carcinoma (cancers starting in skin or tissues lining organs) and sarcoma (cancers of connective tissues like bone or muscle). It is most often found in the lungs but can appear in other places. Because it is uncommon and complex, it’s important to discuss what this diagnosis means for you with your healthcare team.

Sarcopenia is a condition where muscle mass, strength, and function decrease, often seen in older adults and people with cancer. It can cause weakness, fatigue, and balance problems, increasing the risk of falls and making daily activities harder. Nutrition, exercise, and overall health affect sarcopenia, so it’s important to discuss what it means for you with your care team.

Sarcosinamide Nitrosourea, also called Sarcnu, is a substance being studied for cancer treatment. It belongs to a group of drugs known as alkylating agents, which work by damaging DNA in cells to help stop cancer growth. While not commonly used yet, Sarcnu may appear in medical reports or research materials. Patients should ask their care team how it relates to their own diagnosis or treatment plan.

Sargramostim, also called GM-CSF (granulocyte-macrophage colony-stimulating factor), is a medicine that helps the body make more white blood cells. It supports the immune system, especially during cancer treatments like chemotherapy that can lower blood cell counts. Sargramostim is used to reduce infection risk and may be part of treatment plans for certain cancers, but it is not a cancer cure by itself.

SARS-CoV-2 is the virus that causes COVID-19, a contagious respiratory illness that began spreading worldwide in late 2019. It belongs to a family of viruses called coronaviruses, which can cause illnesses ranging from the common cold to more serious lung infections. Understanding SARS-CoV-2 is important, especially for people with cancer, as it can affect health and treatment plans.

A satellite tumor is a small group of cancer cells located near the original tumor but separate from it. In melanoma, these tumors appear within 2 centimeters of the main tumor on or under the skin and can be seen without a microscope. Satellite tumors show that the cancer has spread beyond its original site and may also be found in other cancers like breast, lung, liver, and brain cancers.

Satraplatin, also known as BMS-182751 or JM 216, is an experimental cancer drug studied mainly for prostate and other cancers. It contains the metal platinum and works by damaging cancer cells’ DNA to stop their growth. Satraplatin is not yet a standard treatment and may be available only through clinical trials. Patients should ask their care team how it might relate to their specific care.

Saturated fat is a type of fat mostly found in animal products like meat and dairy, and some plant oils such as coconut and palm oil. Eating too much saturated fat can raise cholesterol levels in the blood, which may increase the risk of heart disease. In cancer care, it’s important to consider saturated fat as part of overall nutrition and heart health, and to discuss its role with your healthcare team.

Saw palmetto is a small palm plant whose berry extract has been studied for prostate health issues, including prostate cancer and urinary symptoms linked to an enlarged prostate (BPH). As of 2023, there is no clear scientific proof that saw palmetto effectively treats cancer or BPH symptoms. Patients should discuss any use of saw palmetto with their healthcare team to understand its role and safety in their care.

SB-715992, also called ispinesib, is an experimental drug studied for cancer treatment. It works by blocking a protein that cancer cells need to divide and grow. This drug is not yet a standard treatment and is mainly seen in research or clinical trials. If you encounter this term, ask your care team how it relates to your specific situation rather than assuming it is a diagnosis or treatment plan.

SB939, also known as pracinostat, is a drug being studied for cancer treatment. It works by blocking an enzyme called histone deacetylase (HDAC), which may help stop tumor cells from growing. Patients should discuss with their care team how SB939 might relate to their specific situation, as it is not a diagnosis or standard treatment on its own.

SBRT (Stereotactic Body Radiation Therapy), also called SABR, is a precise type of external radiation treatment used to target tumors in the body outside the brain. It delivers high doses of radiation in a few sessions, carefully aiming to protect nearby healthy tissue. Patients may see different names for this treatment, so it’s important to ask your care team how it applies to your plan.

Leridistim, also called SC-70935, is a substance being studied to help increase blood cell production during chemotherapy. It belongs to a group of drugs called colony-stimulating factors that encourage the bone marrow to make more blood cells. Patients may see this term in medical reports or educational materials and should ask their care team how it relates to their specific situation.

SC-PEG E. Coli L-Asparaginase, also known as Asparlas or calaspargase pegol, is a medicine used with other drugs to treat acute lymphoblastic leukemia (ALL) in children and young adults. It works by breaking down a nutrient cancer cells need to grow. This drug may appear under different names, so it’s important to ask your care team how it fits into your treatment plan.

Scalar Light Cancer-Related Claims refer to statements or ideas linking Scalar Light technology to cancer care. These claims may involve direct anticancer effects, symptom relief, nutrition support, or improving quality of life. While some people explore Scalar Light approaches to complement standard treatments, there is no strong scientific evidence supporting its effectiveness. Safety and coordination with your cancer care team are important if you consider this approach.

Scalar Light Divine Intelligence Standard Program is a complementary approach sometimes discussed in cancer care. It combines three daily protocols—Pathogenic Cleanse, Chakra and Brain Wave Balancing, and Nutrient Boost—that claim to work through scalar light energy using photographs rather than direct physical contact. People may explore it for symptom relief, nutrition support, immune help, or quality of life, but it is not proven as a cancer treatment. Always talk with your healthcare team before trying it.

Scalar Light Remote Photograph Wellness Sessions are alternative energy sessions offered remotely using a submitted photograph. They are promoted for general wellness and spiritual or physical support but are not medical treatments. People with cancer may explore these sessions for symptom relief, immune support, or quality of life, but there is no scientific evidence proving their effectiveness or safety during cancer care.

Scalar Wave / Quantum Radionics is an alternative approach sometimes mentioned in cancer care. People may explore it for symptom relief, nutrition support, immune help, or quality of life. It is not a proven cancer treatment and should never replace standard medical care. Anyone interested should discuss it with their cancer care team to ensure safety and coordination with other treatments.

Scalar Wave / Quantum Radionics is an alternative approach sometimes mentioned in cancer care. People may explore it for symptom relief, nutrition support, immune help, or quality of life. It is not a proven cancer treatment and should never replace standard medical care. Anyone interested should discuss it with their cancer care team to ensure safety and coordination with other treatments.

A scalpel is a small, very sharp knife used by doctors during surgery to carefully cut tissue. Safety scalpels are designed to reduce the risk of accidental cuts and infections. They are commonly used in procedures like biopsies to remove tissue samples for testing, including in cancer care. If you see the word scalpel in your medical information, ask your care team how it relates to your care.

A scan is a medical test that creates detailed pictures of the inside of your body. Different types of scans, like CT, MRI, or nuclear scans, help doctors find and monitor health problems such as cancer, broken bones, or heart disease. Scans can guide treatment decisions and check how well treatments are working.

A scanner is a medical device that takes pictures inside the body to help doctors find and understand health problems, including cancer. Different types of scanners use various technologies like X-rays, magnets, or radioactive tracers. Your care team will choose the right scan based on your health needs and explain how the results may affect your treatment.

The scapula, also called the shoulder blade, is a flat, triangular bone located on the back of each shoulder. It connects the upper arm bone to the collarbone (clavicle) and helps support shoulder movement. In cancer care, the scapula may be mentioned when discussing tumors or lymph nodes near the shoulder or upper chest. Understanding this term can help you follow your care and ask questions about your diagnosis or treatment.

Scar tissue is fibrous tissue that forms when normal tissue is damaged by injury, surgery, disease, or inflammation. In cancer care, scar tissue can cause blockages or changes in organs, affecting how they work. It is important to understand scar tissue in context and discuss with your care team what it means for your specific situation.

Scatter radiation is radiation that spreads out in different directions when a radiation beam passes through body tissue. It usually has much lower energy than the original beam. In cancer care, protective methods like testicular shielding help reduce exposure of sensitive organs to scatter radiation during treatment, aiming to preserve fertility and hormone function. Patients should ask their care team how scatter radiation relates to their specific treatment.

Scattered fibroglandular breast tissue is a common way to describe breast tissue that is mostly fatty but has some areas of dense fibrous and glandular tissue. This pattern appears on mammograms and can make it a bit harder to spot breast cancer or other changes. About 40% of women have this type of breast tissue. It is not a diagnosis or a sign of cancer by itself.

Scemblix, also called Asciminib Hydrochloride, is a medicine used to treat adults with a type of blood cancer called chronic myelogenous leukemia (CML) that has a specific genetic change known as the Philadelphia chromosome. It is often used when other treatments have not worked or when the cancer has a certain mutation called T315I.

SCENAR Therapy, also called Neuro-Adaptive Electrostimulation, is a device-based treatment used mainly in alternative cancer care. It involves sending electrical impulses through the skin to help manage symptoms like pain, inflammation, fatigue, and scar healing. While some claim it supports the immune system or fights cancer directly, these uses are not proven in standard cancer treatment. Patients should discuss it carefully with their healthcare team.

SCENAR Therapy, also called Neuro-Adaptive Electrostimulation, is a device-based treatment used mainly in alternative cancer care. It involves sending electrical impulses through the skin to help manage symptoms like pain, inflammation, fatigue, and scar healing. While some claim it supports the immune system or fights cancer directly, these uses are not proven in standard cancer treatment. Patients should discuss it carefully with their healthcare team.

SCF, also called kit ligand or stem cell factor, is a natural protein in the body that helps blood stem cells grow and develop into different types of blood cells. It plays an important role in maintaining healthy blood cell levels. SCF is not a cancer treatment by itself but may be mentioned in medical reports or discussions about blood cell growth and related research.

Lonafarnib, also called SCH 66336, is a medicine taken by mouth that blocks an enzyme called farnesyltransferase. It is used to lower the risk of death in people with Hutchinson-Gilford progeria syndrome, a rare condition causing early aging symptoms. Lonafarnib has also been studied for certain cancers and hepatitis D virus infections and is sold under the brand name Zokinvy.

SCH-58500, also known as ACN53, Rad/P53, or recombinant adenovirus-p53, is an experimental gene therapy studied for some cancers. It uses a weakened virus to deliver the p53 gene into tumor cells, which may help cause cancer cells to die. This therapy is not yet standard and is usually available only through clinical trials or research settings.

Schaffner / Immanence Health Integrative Cancer Care is a program or clinic approach that combines various ideas, tests, supplements, lifestyle changes, medications, coaching, and therapies related to cancer prevention, treatment support, symptom relief, and recovery. It is not a single treatment but a collection of services and strategies. Patients should discuss this approach with their healthcare team before use to understand its role and safety in their care.

Schaffner / Immanence Health Integrative Cancer Care is a program or clinic approach that combines various tests, supplements, lifestyle changes, medications, coaching, and therapies aimed at supporting cancer prevention, treatment support, symptom relief, and recovery. It is not a single treatment but a collection of services. Patients should discuss this approach with their healthcare team to understand its role and safety in their care.

A Schedule I Controlled Substance is a drug or substance that the U.S. government tightly controls because it has a high chance of abuse or addiction and no accepted medical use in the United States. Examples include heroin and LSD. Although marijuana is federally classified as Schedule I, some states allow its medical or recreational use. Patients should ask their care team how this term applies to their situation.

A Schedule I Drug, also called a Schedule I Controlled Substance, is a drug that the U.S. government tightly controls because it has a high chance of abuse or addiction and no approved medical use in the United States. Examples include heroin and LSD. Although marijuana is federally classified as Schedule I, some states allow its medical or recreational use. Patients should ask their care team how this term applies to their situation.

The Schiller Test is a procedure where iodine is applied to the cervix to help identify abnormal cells. Healthy cells turn brown, while abnormal cells do not change color. This test is one tool doctors may use to check cervical health. If you hear this term, ask your care team how it relates to your situation rather than assuming it means a diagnosis or treatment.

Schistosomes are parasitic worms found in certain tropical and subtropical regions. One type of schistosome has been linked to bladder cancer. These parasites can cause a disease called schistosomiasis, which affects the liver, bladder, and intestines. Treatment often includes medication to kill the worms and sometimes steroids to reduce inflammation. If you see this term, ask your care team how it relates to your health situation.

Schizophrenia is a serious mental illness that affects how a person thinks, feels, and behaves. It can cause symptoms like hearing voices, false beliefs, and trouble thinking clearly. In cancer care, medicines called antipsychotics—often used to treat schizophrenia—may also help manage symptoms caused by cancer or its treatments. It’s important to understand the term in context and ask your care team what it means for you or your loved one.

A school liaison is a person who helps children return to school after a serious illness like cancer or a long hospital stay. They support parents, teachers, and classmates by explaining any special needs the child may have due to their illness or treatment. They may also arrange education services at home or in the hospital if the child cannot attend school right away.

Schwann cells are special cells that support and protect nerves outside the brain and spinal cord. They help keep nerve fibers healthy and speed up nerve signals. Sometimes, growths called Abrikossoff tumors or granular cell tumors can start in Schwann cells. Most of these tumors are not cancer, but some can be. Understanding Schwann cells helps patients talk with their care team about nerve-related tumors and treatments.

A schwannoma is a usually noncancerous tumor that grows from the protective covering of nerves called Schwann cells. These tumors often develop in areas like the inner ear nerves, where they are known as vestibular schwannomas or acoustic neuromas. While benign, schwannomas can cause symptoms by pressing on nearby nerves and may require monitoring or treatment. It’s important to discuss what this term means for your specific situation with your healthcare team.

SCID, or severe combined immunodeficiency disease, is a rare inherited disorder that severely weakens the immune system. It causes a lack of important white blood cells, making it hard for the body to fight infections. People with SCID are at high risk for serious infections and may need special treatments to protect their health.

A Scientific Review Committee (also called a Scientific Review Panel) is a group of doctors, scientists, and experts who carefully review the plan for a clinical trial or research study. They check that the study is well designed and scientifically sound before it moves forward. For patients and caregivers, it’s important to understand this term in context and ask your care team how it relates to your care, rather than seeing it as a diagnosis or treatment advice.

A Scientific Review Panel (also called a Scientific Review Committee) is a group of experts who carefully check the plan for a clinical trial or research study. Their job is to make sure the study is well designed and scientifically sound before it moves forward. For patients, it’s important to ask your care team how this review relates to your care, rather than seeing the term as a diagnosis or treatment decision.

A scientist is a person trained in science who studies how cancer develops and tests new treatments and prevention methods before they are used in people. For patients and caregivers, it’s important to understand the role of scientists in research and to ask your care team how scientific findings relate to your own care, rather than seeing the word alone as a diagnosis or treatment advice.

Scintigraphy, also called radionuclide scanning, is a medical imaging test that uses a small amount of radioactive material to create pictures of structures inside the body. It helps doctors find areas where cancer cells or other problems may be present. The test is painless and often used to check if cancer has spread, especially to the bones.

Scintimammography, also called the Miraluma Test or Sestamibi Breast Imaging, is a special breast imaging test used to help find cancer cells in women who have had abnormal mammograms or have dense breast tissue. It involves a small injection of a radioactive substance and pictures taken with a special camera. It is not used for routine breast cancer screening or to replace mammograms.

The sclera is the white, tough outer layer of the eye that covers most of the eyeball. It helps protect the eye and maintain its shape. In cancer care, recognizing eye symptoms involving the sclera, such as redness or inflammation, is important because some treatments or related autoimmune conditions may cause similar eye issues. Always ask your care team how the term applies to your situation.

Scleroderma is a chronic autoimmune disease that causes the skin to become hard and thick. It can affect just the skin or involve internal organs like the lungs, heart, and kidneys. Symptoms vary but may include tight skin, fatigue, and problems with blood flow. While there is no cure, treatments can help manage symptoms and protect organs.

Sclerosing adenosis is a benign (non-cancerous) breast condition where the milk-producing glands, called lobules, become larger and contain scar-like tissue. It can cause breast lumps or pain and may slightly increase breast cancer risk. A biopsy is often needed to distinguish it from breast cancer. Patients should discuss what this finding means for their individual health with their care team.

Sclerosing epithelioid fibrosarcoma (SEF) is a very rare, slow-growing cancer that forms in connective (fibrous) tissue. It usually affects adults and can come back or spread to other parts of the body many years after treatment. SEF is a type of soft tissue sarcoma and is often treated with surgery. Because it is rare and can be confused with similar tumors, it’s important to discuss what this diagnosis means for each person with their care team.

Sclerosol Intrapleural Aerosol, also known as Sterile Talc Powder or Steritalc, is a medicine used to prevent fluid buildup in the space around the lungs caused by cancer. It is given through a tube into the pleural space, where it helps close this space to stop fluid from collecting again. This treatment is FDA-approved and commonly used to manage malignant pleural effusions.

Sclerotherapy is a medical treatment that involves injecting a liquid into abnormal or unwanted blood vessels, causing them to shrink and disappear. It is commonly used to treat spider veins, varicose veins, and certain vascular tumors. The treated vessels are absorbed by the body, and blood flow shifts to nearby healthy veins. This treatment has been used for over 150 years and may be combined with newer techniques like ultrasound guidance and foam injections.

Scoliosis is a condition where the spine curves sideways, often in an S- or C-shape. It can be present from birth or develop due to muscle problems, inflammation, tumors, or other causes. Mild scoliosis may cause no symptoms, but severe cases can affect breathing and movement. If scoliosis is mentioned in your care, ask your healthcare team what it means for you personally.

Screening means checking for cancer or other diseases before symptoms appear. It helps find cancer early, when treatment may work better. Common screening tests include mammograms for breast cancer, Pap and HPV tests for cervical cancer, colonoscopies for colorectal cancer, and PSA tests for prostate cancer. Screening is part of routine health care and decisions about it should be made with your care team based on your personal risk and health history.

A screening mammogram is an X-ray of the breast used to check for breast cancer in people who have no symptoms. It can find tumors or tiny calcium deposits early, often before they can be felt. Regular screening mammograms may help detect breast cancer sooner, allowing treatment to start earlier. However, they also have risks, such as false alarms or missed cancers, so it’s important to discuss with your healthcare provider how screening applies to you.

A screening test is a medical check that looks for signs of cancer or other diseases before symptoms appear. These tests can help find cancer early, when it may be easier to treat. Common cancer screening tests include mammograms for breast cancer, Pap tests for cervical cancer, and colonoscopies for colorectal cancer. Talk with your doctor about which screening tests are right for you based on your age, health, and risk factors.

Scrotal edema is swelling caused by fluid buildup in the scrotum, the sac around the testicles. It can happen on one or both sides and may be a sign of health issues like congestive heart failure. If you see this term in your care, it’s important to ask your healthcare team what it means for your specific situation rather than assuming it is a diagnosis or treatment plan.

The scrotum is the loose skin sac that hangs below the penis and holds the testicles. It helps keep the testicles at a temperature slightly cooler than the rest of the body, which is important for making healthy sperm. Some men, such as those exposed to DES before birth, may have testicular issues like cysts or undescended testicles, which can affect health and cancer risk.

Scutellaria barbata, also called barbed skullcap, is a plant used in traditional Chinese medicine. It is sometimes included in herbal drinks or supplements and has been used to support the immune system and treat certain health problems, including lung cancer. While some early research suggests it may have anticancer effects, it is not a standard cancer treatment. Always ask your healthcare team how it relates to your care.

Social determinants of health (SDOH) are the conditions in the places where people live, learn, work, and play that affect their health. These include factors like education, income, housing, transportation, and access to healthy food, clean air and water, and health care. SDOH can influence cancer risk, treatment outcomes, and overall well-being, especially in certain groups of people.

A second-degree relative (SDR) is a family member who shares about 25% of your genes, such as an aunt, uncle, grandparent, niece, nephew, or half-sibling. Understanding who counts as an SDR can help when discussing family health history, especially in cancer care. Always ask your care team how this term applies to your personal situation rather than assuming it means a diagnosis or treatment plan.

Shwachman-Diamond syndrome (SDS) is a rare inherited disorder affecting the pancreas and bone marrow. It can cause problems with digestion, low white blood cell counts, bone issues, and short stature. Infants with SDS are more prone to bacterial infections and have a higher risk of developing blood disorders like aplastic anemia, myelodysplastic syndrome, and leukemia. If you see SDS mentioned in medical information, it’s important to ask your care team what it means for the individual patient.

SDX-102, also called alanosine, is an experimental drug being studied for cancer treatment. It belongs to a group of medicines called antimetabolites, which work by interfering with cancer cells’ growth. While it is not yet a standard or widely available treatment, doctors may mention it when discussing clinical trials or new therapy options.

Se-methyl-seleno-L-cysteine is a natural amino acid containing selenium, found in plants like garlic and broccoli. It acts as an antioxidant and may help protect cells from damage or slow cancer cell growth. Patients should discuss its meaning and relevance with their care team rather than seeing it as a direct treatment or diagnosis.

Sebaceoma, also called sebaceous epithelioma, is a rare, noncancerous tumor that forms in the oil glands of the skin. It usually appears as a slow-growing, painless bump that is yellow, orange, or skin-colored, often found on the head or neck. Sebaceomas most often occur in older adults and can be linked to a rare inherited condition called Muir-Torre syndrome, which increases cancer risk.

Sebaceous epithelioma, also called sebaceoma, is a rare, noncancerous skin tumor that forms in oil glands. It usually appears as a small, slow-growing, painless bump that is yellow, orange, or skin-colored, often found on the head or neck. It mostly occurs in older adults and can be linked to a rare inherited condition called Muir-Torre syndrome, which increases cancer risk.

Sebum is an oily substance made by glands in the skin that helps keep skin and hair soft and protected. In cancer care, changes in sebum production can cause acne-like skin symptoms, which may signal side effects from treatment. Patients should discuss any skin changes with their care team to understand what they mean for their care.

A second opinion means getting a review of your diagnosis and treatment plan from a different doctor. It can confirm or question the first doctor’s advice, provide more information about your condition, and suggest other treatment options. Many patients find second opinions helpful to feel more confident and informed before starting cancer treatment.

A second primary cancer is a new and separate cancer that develops in someone who has had cancer before. It can happen months or years after the first cancer was treated. Certain cancer treatments, inherited gene changes, and exposures like tobacco smoke may increase the risk. Understanding this term helps patients and caregivers discuss their care with their medical team.

A second-degree relative (SDR) is a family member who shares about 25% of your genes, such as an aunt, uncle, grandparent, niece, nephew, or half-sibling. Knowing who your SDRs are can help doctors understand your family health history and assess risks for certain diseases, including some cancers. Always ask your care team how this term applies to your personal situation rather than assuming it means a diagnosis or treatment plan.

Second-line therapy is a treatment given when the first treatment (called first-line therapy) doesn’t work well enough or causes too many side effects. It may replace or be added to the initial treatment. Patients and caregivers should ask their care team how second-line therapy applies to their specific situation, rather than assuming it means a particular diagnosis or treatment plan.

Second-look surgery is an operation done after initial cancer treatment to check if any cancer cells remain. It helps doctors see if the cancer has been fully removed or if more treatment might be needed. This surgery is part of follow-up care and may be recommended based on the type of cancer and treatment plan.

Secondary cancer, also called secondary tumor, is cancer that has spread from where it first started (the primary cancer) to another part of the body. For example, breast cancer cells can spread to the lungs and form new tumors there. These new tumors are made of the same type of cancer cells as the original cancer. Knowing this helps guide treatment and understand the diagnosis.

A secondary endpoint is an additional result measured in a clinical trial beyond the main goal, called the primary endpoint. It helps researchers understand other effects of a treatment, such as how long a patient lives without cancer growing or the rate of tumor shrinkage. Patients should discuss with their care team what these results mean for their individual care.

Secondary ovarian failure, also called secondary ovarian insufficiency, is a condition where the ovaries stop working properly before age 40, but the ovaries themselves are normal. The problem comes from hormone signals from the brain not reaching the ovaries. It can cause missed periods, fertility challenges, and menopause-like symptoms. Causes include certain medicines, too much exercise, or eating disorders. Some women may still have periods or be able to have children. Always ask your care team what this means for.

Secondary ovarian insufficiency, also called secondary ovarian failure, is when the ovaries stop working properly before age 40, but the ovaries themselves are normal. The problem comes from hormone signals from the brain not reaching the ovaries. This can cause missed periods, menopause-like symptoms, and fertility challenges. Some women may still have periods or be able to have children. Always ask your care team what this means for you personally.

A secondary tumor is a cancer that has spread from where it first started (the primary cancer) to another part of the body. For example, if breast cancer spreads to the lungs, the tumor in the lungs is a secondary tumor made of breast cancer cells, not lung cancer cells. Secondary tumors are also called secondary cancer or metastatic tumors.

Secondhand smoke is the smoke that comes from burning tobacco products and the smoke exhaled by smokers. It contains many harmful chemicals, including some that can cause cancer. People can be exposed to secondhand smoke in places like homes, workplaces, and public areas such as bars and restaurants. Breathing secondhand smoke can harm your health, even if you don’t smoke yourself.

To secrete means to make and release a substance from cells or glands in the body. For example, sweat glands secrete sweat to cool the body, and some glands secrete hormones that affect other parts of the body. Secretion is a normal process important for many body functions. This entry helps connect the word with diagnoses, testing, treatments, supportive care, research notes, protocols, media, books, people, organizations, and safety concerns.

Secretin is a natural hormone made by cells in the small intestine. It helps the pancreas, liver, and stomach release substances that aid digestion. Synthetic forms of secretin are used in medical tests to check how well the pancreas works. If you see the term secretin in your care, ask your healthcare team what it means for your specific situation.

Secretin Human, also called Chirhostim or synthetic human secretin, is a lab-made hormone used in medical tests to check how the pancreas works. It helps doctors diagnose certain pancreatic problems, including rare tumors called gastrinomas. If you see this term, ask your care team what it means for your specific situation rather than assuming it is a diagnosis or treatment.

The secretin stimulation test, also called a pancreatic function test, checks how well your pancreas responds to a hormone named secretin. During the test, a thin tube is placed through your nose or throat into your stomach and small intestine. Secretin is given by injection, and fluid samples are collected to see how your pancreas reacts. This test helps doctors diagnose pancreatic problems like pancreatitis, cystic fibrosis, or certain tumors.

Sedation is a state of calmness or relaxation caused by medicines to help patients feel comfortable during medical procedures. In cancer care, sedation helps reduce anxiety and pain during tests, surgeries, or treatments. It allows patients to stay relaxed and sometimes awake enough to follow instructions, while keeping them safe and comfortable.

A sedative is a medicine used to calm the mind, reduce anxiety, or help with sleep. In cancer care, sedatives may be prescribed to ease symptoms like anxiety or trouble sleeping that can happen during diagnosis, treatment, or recovery. It’s important to talk with your healthcare team about how sedatives fit into your care and to use them safely under medical guidance.

Sedimentation Rate, also called Erythrocyte Sedimentation Rate (ESR), is a blood test that measures how quickly red blood cells settle at the bottom of a test tube in one hour. It can indicate inflammation or other health changes but does not diagnose a specific disease. Patients should discuss their ESR results with their healthcare team to understand what it means for their individual health.

Sedoxantrone Trihydrochloride, also known as CI-958, is an experimental drug studied for treating certain cancers. It works by attaching to DNA in cells and blocking their ability to repair DNA damage and make new DNA, RNA, and proteins. This may help stop cancer cells from growing. It is not yet a standard treatment and is mainly available through clinical trials.

The SEER Program is a National Cancer Institute project that collects and reports information about cancer cases and deaths across the United States. It provides yearly updates on cancer statistics, including details like patient age, tumor type, cancer stage, treatments, and survival. For patients and caregivers, SEER data helps understand cancer trends but is not a diagnosis or treatment guide.

Subependymal giant cell astrocytomas (SEGAs) are slow-growing, non-cancerous brain tumors made of star-shaped cells called astrocytes. They most often occur in people with tuberous sclerosis, a genetic condition that causes benign tumors to form in the brain and other parts of the body. Understanding this term can help patients and caregivers discuss diagnosis and treatment options with their healthcare team.

Segmental cystectomy, also called partial cystectomy, is surgery to remove only part of the bladder. It is an option when a tumor or problem is limited to a specific area of the bladder and has not spread widely. This surgery aims to treat the affected section while preserving as much bladder function as possible.

Segmental mastectomy is a type of breast cancer surgery that removes the cancerous tumor along with some surrounding healthy breast tissue, but not the entire breast. It is also called breast-conserving surgery, lumpectomy, partial mastectomy, breast-sparing surgery, or quadrantectomy. Sometimes, lymph nodes under the arm may be removed to check for cancer spread. This surgery aims to treat cancer while preserving most of the breast.

Segmental resection, also called segmentectomy, is a surgery that removes part of an organ or gland. It is often used to take out a tumor along with some healthy tissue nearby. For example, in lung cancer, it means removing a section of a lung lobe rather than the whole lobe. Understanding this term in your own medical context is important, so ask your care team how it applies to your situation.

Segmentectomy, also called segmental resection, is a surgery that removes part of an organ or gland. It is often used to take out a tumor along with some healthy tissue nearby. For example, in lung cancer, it means removing a section of a lung lobe rather than the whole lobe. Understanding how this term applies to your care is important, so ask your care team for details.

A seizure is a sudden, uncontrolled change in brain activity that can cause shaking, loss of awareness, or changes in behavior. In cancer care, seizures may happen if tumors affect the brain or as side effects of treatment. Doctors may prescribe anti-seizure medicines to help manage these symptoms and improve safety and quality of life.

Selection bias happens when the people chosen for a medical study or treatment group are not representative of the larger group they come from. This can affect how trustworthy the study results are. For patients and caregivers, it’s important to understand selection bias in context and ask the care team how it might relate to an individual’s care, rather than assuming it means a specific diagnosis or treatment choice.

Selective estrogen receptor degraders (SERDs) are drugs used to treat certain breast cancers that need estrogen to grow. They work by attaching to estrogen receptors on cancer cells and causing these receptors to break down, which may help stop cancer growth. Examples include fulvestrant and elacestrant (brand name Orserdu). SERDs are a type of hormone therapy often used when other hormone treatments have stopped working.

Selective estrogen receptor modulators (SERMs) are medicines that can act like estrogen in some parts of the body but block estrogen’s effects in others. They are often used in hormone therapy for breast cancer to help slow or stop cancer growth by interfering with estrogen’s influence on cancer cells. Common SERMs include tamoxifen and raloxifene.

Selective serotonin reuptake inhibitors (SSRIs) are a group of medicines that help improve mood by increasing serotonin, a brain chemical that affects emotions. They are commonly used to treat depression and anxiety. In cancer care, SSRIs may be prescribed to help manage emotional challenges during or after treatment. Examples include citalopram (Celexa), fluoxetine, and sertraline.

Selenium is a mineral needed for good health and is being studied for its possible role in cancer prevention and treatment. Some cancer patients explore selenium-rich foods or supplements to support nutrition, immune health, or treatment tolerance. It is important to discuss selenium use with your care team, as it is not a standard cancer treatment and may have risks or interactions.

Selenium-enriched diets include foods or supplements high in selenium, a mineral important for health. Some people with cancer explore these diets to support nutrition, immune health, or help tolerate treatment. Selenium is not a proven cancer treatment and should be used carefully under medical guidance. Always discuss selenium use with your healthcare team to ensure safety and avoid interactions with medications.

Self-esteem is a feeling of self-worth, confidence, and respect for oneself. It can affect how people cope with challenges, including cancer. While self-esteem is important for mental well-being, it is not a medical diagnosis or treatment by itself. Patients and caregivers should talk with their care team about what self-esteem means for their individual situation.

Selinexor, also known by the brand name Xpovio, is a cancer medicine used to treat certain types of lymphoma and multiple myeloma, especially when other treatments have not worked. It works by blocking a protein that helps cancer cells grow. Selinexor may cause side effects like low blood counts and nausea. Patients should discuss with their care team how this medicine fits their treatment plan.

The sella turcica is a small, saddle-shaped depression in a bone at the base of the skull called the sphenoid bone. It holds the pituitary gland, an important gland that controls many body functions. In cancer care, tumors near or in the sella turcica may affect the pituitary gland or nearby areas. If you see this term in your medical information, ask your care team what it means for your specific situation.

Selpercatinib, also known by the brand name Retevmo, is a targeted cancer medicine used to treat tumors with specific changes in the RET gene. It is approved for certain lung and thyroid cancers in adults and children aged 2 years and older. Selpercatinib works by blocking proteins made by the altered RET gene, which may help slow cancer growth. It is taken by mouth and may cause side effects like liver problems and high blood pressure.

Selumetinib sulfate, also known as Koselugo or AZD6244, is a medicine used to treat children aged 2 and older with neurofibromatosis type 1 (NF1). It helps shrink plexiform neurofibromas—tumors on nerves that cause symptoms and cannot be removed by surgery. Selumetinib works by blocking proteins that help these tumors grow and is also being studied for some cancers.

Semaxanib, also known as SU5416, is an experimental drug studied for cancer treatment. It works by blocking certain signals that help tumors grow new blood vessels. Although it showed promise in early research, clinical trials did not show enough benefit, and its development was stopped. Patients may see this name in research or medical reports and should discuss its meaning with their care team.

Semen is the fluid released through the penis during orgasm. It contains sperm from the testicles and fluids from the prostate and other glands. Semen can sometimes show signs of health issues, such as blood in the semen, which may need medical evaluation. Understanding semen and its role can be important in prostate health and cancer care.

Seminal fluid, also called semen, is the fluid released from the male reproductive system that carries sperm. It contains sugars and proteins that help sperm survive and move. In cancer care, understanding seminal fluid may be important when discussing symptoms, treatments, or side effects related to the male reproductive organs. Always ask your care team how this term applies to your situation.

The seminal vesicles are a pair of small glands located behind the bladder in males. They produce fluid that makes up much of the semen, helping sperm move and survive. Diseases affecting the seminal vesicles, including infections or cancer spread, may cause few or vague symptoms. They are sometimes removed during prostate cancer surgery.

A seminal vesicle biopsy is a procedure where a small sample of fluid or tissue is taken with a needle from the seminal vesicles, glands near the prostate that help produce semen. This sample is examined under a microscope to check for signs of disease, including cancer. It may be done when cancer is suspected to have spread beyond the prostate.

A seminoma is a type of cancer that starts in germ cells, which are the cells that form sperm in males. It most often occurs in the testicles but can also appear in other parts of the body like the chest or brain. Seminomas usually grow and spread slowly and tend to affect young men. Understanding this term helps patients and caregivers discuss diagnosis and treatment options with their care team.

Semiparasitic describes plants like mistletoe that grow on trees and get some nutrients from their hosts while also making their own food through photosynthesis. Mistletoe extracts are used as complementary therapies by some cancer patients in Europe, but they are not approved cancer treatments in the United States. Patients should discuss any use of mistletoe with their healthcare team to understand its role and safety in their care.

Semustine is a chemotherapy drug studied for treating some cancers. It works by damaging cancer cells’ DNA to help stop their growth. It belongs to a group called alkylating agents and nitrosoureas. Patients should discuss with their care team how semustine fits into their treatment and what side effects to expect.

Seneca Valley Virus-001, also called NTX-010 or SVV-001, is a virus being studied as a possible treatment for certain cancers, especially neuroendocrine tumors. It is a type of oncolytic virus that infects and destroys cancer cells while sparing normal cells. Researchers are exploring its safety and potential to help treat cancers like small cell lung cancer and neuroblastoma.

Senega root is the dried root of a plant called Polygala senega, also known as Seneca snakeroot. Traditionally, it has been used in some cultures to help with breathing problems. You might see it mentioned as an ingredient in herbal remedies or natural products. If you come across this term during your cancer care, it’s important to ask your healthcare team what it means for your specific situation rather than assuming it is a treatment or diagnosis.

Senescence is the natural process of aging in cells and organisms. It involves cells that stop dividing but remain active, which can sometimes lead to inflammation and tissue damage. Senescence may play a role in cancer and other diseases. For patients and caregivers, it’s important to understand this term in context and ask your care team how it relates to your specific health situation.

Senile keratosis, also called actinic keratosis or solar keratosis, is a rough, scaly patch of skin that often appears on sun-exposed areas like the face, scalp, hands, or chest. It is caused by long-term sun damage and is considered a precancerous condition because it can sometimes develop into skin cancer if not treated or monitored.

Senses are the ways your body takes in information from the world around you, including sight, hearing, smell, taste, and touch. In cancer care, senses may be affected by aging, other health conditions, or treatments. If you hear about senses during your care, it’s important to ask your healthcare team how it relates to your health and treatment plan.

In medicine, sensitivity describes how the body or tests respond to diseases, treatments, or environmental factors. For example, skin sensitivity means skin may burn or react easily to sun exposure. In cancer care, understanding sensitivity helps guide safe treatment and prevention, especially for patients with conditions like albinism that affect skin and eye sensitivity. Always ask your care team how sensitivity applies to your personal health.

A sensor is a device that detects changes like heat, light, or pressure and sends signals that can be measured. In cancer care, sensors are often part of tests that check for nerve damage or tumors affecting hearing. Understanding the term sensor helps patients and caregivers ask the right questions about test results and treatment plans.

Sensorcaine, also known as bupivacaine hydrochloride or Marcaine, is a local anesthetic medicine used to numb a specific area of the body. It helps relieve pain by blocking nerve signals and is often used during and after cancer-related surgeries to manage pain in the targeted area. It may also appear under related names such as Bupivacaine Hydrochloride, Marcaine.

In cancer care, sensory refers to anything related to the senses, such as touch, smell, or sight. Sensory technologies and support help patients who face physical or sensory challenges during or after treatment, aiming to improve comfort and independence. If you see this term, ask your care team how it applies to your situation rather than assuming it means a diagnosis or treatment plan.

A sentinel lymph node is the first lymph node where cancer cells are most likely to spread from the original tumor. Doctors often check this node to see if cancer has started to spread. Understanding what the sentinel lymph node means can help guide treatment decisions and may help avoid more extensive lymph node surgery.

A sentinel lymph node biopsy is a procedure to find and remove the first lymph node(s) where cancer might spread from a tumor. Doctors check these nodes for cancer cells to help understand if the cancer has spread. This test helps guide treatment decisions and may reduce the need for more extensive lymph node surgery.

Sentinel lymph node mapping is a procedure used to find the first lymph node(s) where cancer is likely to spread from a tumor. By identifying and testing these nodes, doctors can better understand if cancer has spread. If no cancer is found in these sentinel nodes, patients may avoid more extensive lymph node surgery, which can reduce side effects and complications.

Seocalcitol is a substance being studied as a possible treatment for cancer. It belongs to a group of drugs called vitamin D analogs. If you see this term, it’s important to discuss with your care team how it might relate to your specific situation rather than assuming it is a diagnosis or treatment recommendation.

Sepsis is a serious and potentially life-threatening reaction to an infection. It happens when the body’s response to infection causes widespread inflammation, which can damage tissues and organs. People with cancer may develop sepsis during treatment, especially if their immune system is weakened. Recognizing sepsis early and getting prompt medical care is very important.

Septate means that a cavity or structure in the body is divided into parts by walls called septa. This term describes how something is shaped or organized, not a diagnosis or treatment. If you see 'septate' in your medical information, ask your care team what it means for your specific situation.

Septicemia, also called blood poisoning or toxemia, is a serious infection where bacteria and their toxins spread through the bloodstream. This condition can cause widespread illness and needs quick medical treatment. People with cancer are at higher risk because their immune systems may be weaker, making infections harder to fight.

The Sequential AC/Taxol-Trastuzumab Regimen is a chemotherapy treatment for breast cancer. It uses a sequence of four drugs: doxorubicin and cyclophosphamide first, followed by paclitaxel and trastuzumab. This combination targets cancer cells in different ways and is often chosen when the cancer tests positive for HER2, a protein that affects cancer growth.

Sequential treatment means giving one treatment after another, rather than at the same time. In cancer care, this approach can help manage side effects or improve how well treatments work. If you see this term, ask your care team what it means for your specific situation, as it is not a diagnosis or a treatment by itself.

A SERD, or selective estrogen receptor degrader, is a type of hormone therapy drug used to treat certain breast cancers. It works by attaching to estrogen receptors on cancer cells and causing those receptors to break down, which can help slow or stop cancer growth. Examples include fulvestrant (Faslodex) and elacestrant (Orserdu). SERDs are often used when breast cancer is estrogen receptor-positive and has become resistant to other hormone treatments.

Selective estrogen receptor modulators (SERMs) are medicines used in hormone therapy for breast cancer. They work by blocking estrogen’s effects in breast tissue, which can help slow or stop the growth of some breast cancers. SERMs can act like estrogen in some parts of the body but block it in others. Common SERMs include tamoxifen and raloxifene. Understanding how SERMs work can help patients and caregivers discuss treatment options with their care team.

Seroconversion is when your body starts making antibodies—special proteins that fight infections—after being exposed to a virus, bacteria, or vaccine. Testing for seroconversion helps doctors see if you’ve had an infection or if your immune system is responding to a vaccine. It’s important to understand what seroconversion means for you personally by talking with your care team, rather than assuming it is a diagnosis or treatment by itself.

Serology tests check the blood for antibodies, which are proteins your immune system makes when it encounters viruses or other germs. These tests can show if you have been exposed to an infection or have certain immune system conditions. It’s important to understand serology results in context and talk with your care team about what they mean for you personally.

A serology test is a blood test that looks for antibodies, which are proteins your immune system makes when it encounters viruses, bacteria, or other foreign substances. These tests can help show if you have been exposed to an infection, have certain immune system conditions, or determine your blood or tissue type. It’s important to discuss what your serology test results mean with your healthcare team, as the term alone does not provide a diagnosis or treatment plan.

A seroma is a pocket of clear fluid that can build up under the skin after surgery, especially breast surgery. It feels like a lump and usually goes away on its own but may sometimes need to be drained. Careful surgery and drains can help prevent seromas. If you hear this term, ask your care team what it means for your specific situation.

Seromycin, also known as D-Cycloserine, is an antibiotic mainly used to treat tuberculosis, especially drug-resistant types. It may also be studied for nerve pain caused by chemotherapy and some mental health conditions. Because it can affect the nervous system, it may cause side effects like dizziness or mood changes. Patients should ask their care team how it applies to their specific situation.

Seronegative describes a lab test result showing that certain antibodies or markers are not found in the blood. This usually means a person has not been exposed to a specific infection or does not have detectable antibodies related to a disease, such as some autoimmune conditions. It’s important to understand this term in context and discuss what it means for you with your care team.

Seropositive means a blood test found specific antibodies, showing your body has responded to an infection or disease. It often means you have been exposed to a virus or have markers for an autoimmune condition. More testing may be needed to understand what this result means for your health. Always discuss seropositive results with your care team to see how they apply to you personally.

Seroprevalence is the percentage of people in a group who have antibodies in their blood showing they were exposed to a specific infection. It helps understand how many people have encountered a virus or other germ. For patients, it’s important to ask your care team what seroprevalence means for you personally, rather than seeing it as a diagnosis or treatment guide.

The serosa, also called the serous membrane, is the thin outer lining that covers organs and body cavities in the abdomen and chest. It helps organs move smoothly inside the body. In cancer care, doctors may describe how far cancer has grown in relation to the serosa to understand the stage and plan treatment. If you see this term, ask your care team what it means for your specific situation.

Serotonin, also called 5-hydroxytryptamine, is a chemical messenger found mostly in the digestive system, brain, and blood. In cancer care, some tumors like carcinoid tumors produce extra serotonin, which can be measured by a related substance called 5-HIAA in urine. Serotonin also plays a role in managing nausea during cancer treatment through medicines called 5-HT3 receptor antagonists.

Serotonin-norepinephrine reuptake inhibitors (SNRIs) are medications that help increase the levels of serotonin and norepinephrine in the brain. These brain chemicals can improve mood and reduce pain. SNRIs, such as duloxetine and venlafaxine, are used to treat depression, anxiety, and some types of chronic pain. If you see this term in your care, ask your healthcare team how it relates to your treatment.

A serotype is a way to group viruses or bacteria based on molecules on their surface. Different serotypes can cause different effects in people. For example, some human papillomavirus (HPV) serotypes cause warts, while others can lead to certain cancers. If you see this term in your medical records, ask your care team what it means for your specific situation.

Serous refers to a type of body fluid or tissue related to serum, the clear part of blood. In cancer care, serous often describes cancers that arise from serous membranes, which line body cavities and produce lubricating fluid. Serous carcinoma is a term for cancers that develop in these membranes, such as in the ovary or uterus. Understanding this term in context helps patients and caregivers discuss diagnosis and treatment with their care team.

The serous membrane, also called serosa, is a thin, smooth layer that covers many organs and lines body cavities in the chest and abdomen. It produces a lubricating fluid that helps organs move smoothly against each other. In cancer care, doctors may describe how far cancer has grown in relation to the serosa to help understand the stage and plan treatment. Ask your care team what it means for your specific situation.

A serrated polyp is an abnormal growth that usually forms on the inner lining of the colon or rectum. These polyps have a saw-tooth pattern under the microscope and include types like hyperplastic polyps, sessile serrated polyps, and traditional serrated adenomas. Some serrated polyps can increase the risk of colorectal cancer, especially when many are present, a condition called serrated polyposis syndrome. Regular colonoscopy and polyp removal help manage this risk.

A Sertoli cell tumor is a rare growth that usually forms in the testicles and sometimes in the ovaries. These tumors can be benign (not cancer) or malignant (cancer). They belong to a group called sex cord-stromal tumors and may produce hormones that affect the body. Early diagnosis and treatment often lead to a good outlook. If you hear this term, it’s important to discuss with your care team what it means for your specific situation.

A Sertoli-Leydig cell tumor is a rare growth that forms in the tissues supporting the ovaries. These tumors produce male hormones like testosterone, which can cause physical changes such as facial hair growth and a deeper voice. They may be benign (not cancer) or malignant (cancer). Early diagnosis and treatment often lead to a good outlook. This tumor is also called androblastoma or arrhenoblastoma.

Sertraline, also known by the brand name Zoloft, is a medicine used to treat depression and anxiety. It belongs to a group called selective serotonin reuptake inhibitors (SSRIs), which help improve mood by increasing serotonin in the brain. In cancer care, sertraline may be prescribed to support emotional well-being during or after treatment. It is important to talk with your care team about how sertraline fits into your care.

Serum is the clear liquid part of blood left after blood cells and clotting proteins are removed. In cancer care, serum tests may measure substances like tumor markers or enzymes to help understand health, monitor treatment, or check for signs of disease. It’s important to discuss what serum test results mean for you with your care team, as the term alone doesn’t provide a diagnosis or treatment plan.

Serum albumin is a protein found in your blood that helps keep fluid in your blood vessels and carries important substances like hormones and medicines. While it is not a test for cancer, doctors may check albumin levels during cancer care to understand your overall health and how your body is handling the disease and its treatment. Low albumin levels can suggest stress on the body from cancer, treatment, or other health issues.

Serum Glutamate Pyruvate Transaminase (SGPT), also called Alanine Transferase (ALT), is an enzyme mainly found in the liver. High levels of SGPT in the blood may indicate liver damage, cancer, or other health issues. Patients often see this term in blood test results and should discuss what it means for their specific situation with their care team.

Serum Glutamic-Oxaloacetic Transaminase (SGOT), also called Aspartate Transaminase (AST), is an enzyme found mainly in the liver, heart, and muscles. When these organs are damaged, AST can leak into the blood. Measuring AST levels helps doctors check for liver or heart problems and monitor organ health during cancer care. A high AST level alone does not diagnose cancer or other diseases, so it’s important to discuss what it means with your healthcare team.

A serum tumor marker test is a blood test that measures substances called tumor markers, which may be released by cancer cells or by the body in response to cancer. High levels of these markers can sometimes suggest cancer, but results must be understood in context. Patients should ask their care team how this test relates to their specific situation rather than interpreting the term alone as a diagnosis or treatment plan.

Serzone, also known as nefazodone, is a medication used to treat depression. In cancer care, it may be prescribed to help manage symptoms of depression that can occur during or after treatment. It is not a cancer treatment but supports emotional well-being. If you see Serzone on a medication list or plan, ask your care team how it fits your care.

SES stands for socioeconomic status, a way to describe a person’s education, income, and type of job. It is often grouped as low, medium, or high. SES can affect access to resources like healthcare, education, and social support, which may influence overall health and cancer care outcomes. Understanding SES helps doctors and care teams consider factors beyond medical tests when planning treatment.

Sesquiterpene lactones are natural compounds found in certain plants that may have anti-inflammatory and anticancer effects. While some plants containing these substances have been used traditionally for health purposes, their role in cancer care is still being studied. Patients should discuss any interest in these compounds with their healthcare team before considering them as part of treatment.

Sestamibi Breast Imaging, also called the Miraluma Test or scintimammography, is a special breast imaging test used to help find cancer cells in women who have had abnormal mammograms or have dense breast tissue. It involves a small injection of a radioactive substance and pictures taken with a special camera. It is not used for routine breast cancer screening or to replace mammograms.

A Sestamibi Scan is a medical imaging test where a small amount of a radioactive substance called technetium, attached to sestamibi, is injected into the body. This test helps find overactive parathyroid glands, breast cancer cells, or heart problems by showing how these tissues absorb the substance, which is then captured by a special camera.

The seventh cranial nerve, also called the facial nerve, carries signals between the brain and the muscles that control facial expressions like smiling and frowning. It also affects some jaw muscles, a small muscle in the middle ear, and helps stimulate glands that produce tears and saliva. This nerve is important in cancer care because tumors near the ear or jaw may affect it, causing symptoms like facial weakness or numbness.

Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) is the virus that causes COVID-19, a contagious respiratory illness that began spreading worldwide in late 2019. It belongs to a family of viruses called coronaviruses, which can cause illnesses ranging from the common cold to more serious lung infections. Understanding SARS-CoV-2 is important, especially for people with cancer, as it can affect health and treatment plans.

Severe Combined Immunodeficiency Disease (SCID) is a rare inherited disorder that severely weakens the immune system. It causes a shortage of important white blood cells, making it hard for the body to fight infections. Babies with SCID often have repeated infections and need special treatments to protect their health. It may also appear under related names such as SCID.

Severe myelosuppression, also called myeloablation, is a serious decrease in bone marrow activity caused by some cancer treatments. This leads to fewer red blood cells, white blood cells, and platelets, which can affect oxygen delivery, infection defense, and blood clotting. It is important to understand this term in the context of your care and ask your healthcare team how it applies to you personally.

Sex cells, also called gametes or reproductive cells, are the egg cells in females and sperm cells in males. Each contains half the usual number of chromosomes (23 in humans). When an egg and sperm join during fertilization, they form a new cell with a full set of chromosomes. Understanding sex cells is important in cancer care, especially when discussing fertility and certain cancers related to these cells.

Sex cord tumors are rare cancers that develop in the supportive tissues of the ovaries or testes. These tumors may produce sex hormones and include types such as granulosa cell, Sertoli cell, and Leydig cell tumors. They are also called sex cord-gonadal stromal tumors or sex cord-stromal tumors. Understanding the exact term used in your medical report can help avoid confusion and guide discussions with your care team.

Sex cord-gonadal stromal tumors are rare cancers that develop in the supportive tissues of the ovaries or testes. These tumors may produce sex hormones and include types such as granulosa cell, Sertoli cell, and Leydig cell tumors. They are sometimes called sex cord tumors or sex cord-stromal tumors. Understanding the exact term used in your medical report can help avoid confusion and guide discussions with your care team.

Sex cord-stromal tumors are rare growths that develop in the supportive tissues of the ovaries or testes. These tumors may produce sex hormones, which can cause physical changes. They include types like granulosa cell, Sertoli cell, and Leydig cell tumors. If you see this term in your medical records, it’s important to discuss with your care team what it means for your specific situation.

Sex drive, also called sexual drive, is the natural desire for sexual activity. It can be affected by many factors including cancer treatments, hormone changes, medications, and overall health. Changes in sex drive are common during and after cancer care and can impact intimacy and quality of life. It may also appear under related names such as Sexual Drive.

Sexual drive, also called sex drive or libido, is the natural desire for sexual activity. It involves physical and emotional feelings and can change due to cancer treatments, hormone shifts, medications, or health conditions. Changes in sexual drive are common during and after cancer care and can affect intimacy and quality of life.

Sexuality involves a person’s feelings, desires, and behaviors related to sex and physical closeness with others. Cancer and its treatments can affect sexuality in many ways, including changes in sexual function, desire, and intimacy. Understanding these changes can help patients and caregivers address concerns and maintain relationships during and after cancer care.

Sexually transmitted diseases (STDs), also called sexually transmitted infections (STIs), are infections passed from one person to another through sexual contact, including vaginal, anal, or oral sex. Some infections may not cause symptoms but can still be spread. Using condoms and safer sex practices can reduce the risk. Common STDs include HPV, HIV, chlamydia, gonorrhea, and syphilis. Untreated infections may lead to serious health problems.

A sexually transmitted infection (STI) is an infection passed from one person to another through sexual contact, including vaginal, anal, or oral sex. STIs can cause symptoms like sores, pain, or unusual discharge, but sometimes have no symptoms at all. If untreated, some STIs can lead to serious health problems. Using condoms and safer sex practices can help reduce the risk of getting or spreading STIs.

Sézary cells are cancerous T cells found in the blood, skin, and lymph nodes of people with Sézary syndrome, a rare and fast-growing type of skin lymphoma. These abnormal cells have a distinctive appearance under the microscope. If you see this term in your medical records, it’s important to ask your care team what it means for your specific situation rather than assuming it alone defines your diagnosis or treatment.

Sézary syndrome is a rare type of cutaneous T-cell lymphoma, a cancer that affects certain white blood cells and mainly involves the skin and blood. It causes widespread red, itchy skin and cancerous T-cells called Sézary cells in the blood. Diagnosis involves skin and blood tests. Treatment options include skin-directed therapies, chemotherapy, radiation, immunotherapy, and targeted drugs.

SGI-110, also called guadecitabine, is a drug being studied for treating some types of cancer. It may help stop tumor cells from growing by blocking enzymes needed for cell division and might make cancer cells more sensitive to other treatments. Patients should ask their care team how this drug relates to their own care, as it is still under research and not a standard treatment.

SGN-00101 is a substance being studied to help prevent cancer. It belongs to a group of drugs called fusion proteins. If you see this term, it’s important to talk with your care team about what it means for your specific situation, rather than assuming it is a diagnosis or treatment plan.

SGN-30 is a type of monoclonal antibody being studied as a treatment for certain cancers. It targets cells with a protein called CD30, which is found on some lymphoma cells. Patients and caregivers should discuss with their care team how SGN-30 might relate to their specific situation rather than viewing it as a diagnosis or treatment recommendation on its own.

SGN-35, also known as brentuximab vedotin or Adcetris, is a targeted cancer medicine used to treat certain lymphomas, including classic Hodgkin lymphoma and some T-cell lymphomas. It works by attaching to cancer cells with a protein called CD30 and delivering a drug to help kill those cells. It may be used alone or with other treatments in adults and children aged 2 and older.

SGN-40 is a type of monoclonal antibody being studied as a treatment for certain cancers, including some blood cancers like non-Hodgkin lymphoma and multiple myeloma. It works by targeting cancer cells that have a specific marker called CD40. SGN-40 is still under research and is not yet a standard treatment. Patients should discuss with their care team what this means for their individual care.

SGOT, also called Aspartate Transaminase (AST), is an enzyme found mainly in the liver, heart, and muscles. When these organs are damaged, SGOT can leak into the blood. Measuring SGOT levels helps doctors check for liver or heart problems and monitor organ health during cancer care. A high SGOT level alone does not diagnose cancer or other diseases, so it’s important to discuss results with your healthcare team.

SGPT, also called Alanine Transferase or ALT, is an enzyme mainly found in the liver. High levels of SGPT in the blood may suggest liver damage, cancer, or other health issues. Doctors measure SGPT to check liver health, especially during cancer diagnosis and treatment. Patients may see SGPT results in blood tests and should discuss what they mean with their care team.

Sham-controlled studies use a fake or inactive procedure that looks like the real treatment to test if the treatment works. For example, in acupuncture research, sham acupuncture uses needles that do not actually penetrate the skin. This helps researchers understand if benefits come from the treatment itself or from other factors like patient expectations.

Shared decision making is a process where patients and their health care team work together to choose the best care plan. It helps patients understand their health condition, available tests and treatments, and the possible risks and benefits. This approach respects the patient’s values and goals, making sure decisions fit what matters most to them.

Shark and bovine cartilage are supplements sometimes discussed in cancer care. They have been promoted with claims that they can block blood supply to tumors or help with symptoms and recovery. However, scientific studies have not shown that these cartilage products cure cancer. People may explore them to support nutrition, ease symptoms, or feel more in control, but safety and coordination with cancer treatment are important.

A shave biopsy is a procedure where a thin layer of skin, including a skin abnormality, is removed with a small blade for examination. While it does not require stitches and can help diagnose skin conditions, deep or scoop shave biopsies are generally avoided for suspicious moles because they may cause scar tissue or recurrent moles that make future melanoma diagnosis harder.

Sheep sorrel, also called dock or sorrel, is a plant sometimes mentioned in discussions about herbal or natural supplements in cancer care. While it has traditional uses and may have antioxidant properties, sheep sorrel is not a proven or standard treatment for cancer. Patients may see different names for this plant, so checking the exact term can help avoid confusion. Always talk with your healthcare team before using any supplement during cancer treatment.

Sheridan’s Formula is a liquid mixture promoted under various names like Cancell, Cantron, Jim’s Juice, and Protocel as a treatment for cancer and other diseases. None of its ingredients have been proven effective against cancer. Since 1989, it has been illegal in the U.S. to make, sell, or distribute Sheridan’s Formula as a treatment for any disease.

Shiitake mushrooms are a type of edible mushroom originally from East Asia, widely used in cooking around the world. They contain natural compounds studied for their potential to support the immune system. Some supplements, like Biobran, are made using enzymes from shiitake mushrooms and rice bran. While these supplements may help immune health, they are not proven cancer treatments and should be discussed with your healthcare team.

The shinbone, also called the tibia, is the larger and stronger of the two bones in the lower leg. It runs from the knee down to the ankle and supports much of the body’s weight. Located at the front of the leg, it works together with the smaller fibula bone to form the lower leg structure.

Shingles, also called herpes zoster, is a viral infection that causes a painful rash with blisters, usually on one side of the body or face. It happens when the chickenpox virus reactivates years later. People with weakened immune systems, including some cancer patients, are at higher risk. Shingles can cause lasting nerve pain and other complications. Vaccines and antiviral medicines can help prevent or reduce symptoms.

Sho-Saiko-To is a traditional Japanese herbal formula made from seven Chinese herbs. It has been studied mainly for liver conditions like hepatitis B, but the research quality is low. It is sometimes explored in cancer care, but patients should discuss its use with their healthcare team rather than seeing it as a treatment on its own.

Short-term side effects are problems caused by cancer treatment that usually go away after treatment ends. Common examples include nausea, vomiting, diarrhea, hair loss, fatigue, and mouth sores. It’s important for patients and caregivers to understand these effects in context and discuss with the care team how they apply to the individual’s situation.

The shoulder blade, also called the scapula, is a flat, triangular bone located at the back of the shoulder. It connects the upper arm bone (humerus) to the collarbone (clavicle), helping support shoulder movement. Understanding this bone can help you better follow medical reports or treatment plans that mention it.

A shunt is a small tube placed by doctors to drain extra fluid from the brain or spinal cord to another part of the body. In cancer care, a cerebrospinal fluid (CSF) shunt helps relieve pressure caused by fluid buildup when tumors or treatments block normal fluid flow. It is a tool to manage symptoms, not a treatment for cancer itself. Patients should ask their care team how a shunt fits into their care and what to expect.

Shwachman Syndrome, also called Shwachman-Diamond syndrome (SDS), is a rare inherited disorder affecting the pancreas and bone marrow. It can cause problems with digestion, low white blood cell counts, bone issues, and short stature. Infants with SDS are more prone to infections and have a higher risk of blood disorders like aplastic anemia, myelodysplastic syndrome, and leukemia. If you see this term, ask your care team how it relates to your or your child’s health.

Shwachman-Diamond Syndrome (SDS) is a rare inherited disorder that affects the pancreas and bone marrow. It can cause problems with digestion, low white blood cell counts, bone abnormalities, and short stature. Infants with SDS are more prone to infections and have a higher risk of developing blood disorders such as aplastic anemia, myelodysplastic syndrome, and leukemia. If you see SDS mentioned, ask your care team how it relates to your or your child’s health.

Sialic acid is a type of sugar molecule found on the surface of many cells, especially in the brain and nervous system. It plays important roles in cell communication and helps cancer cells spread by changing their surface properties. While sialic acid itself is not a disease, changes in its levels or forms can be important in cancer and other health conditions.

Sialyl Tn-KLH is a type of vaccine designed to boost the immune system by targeting a specific marker found on some cancer cells. It includes a substance that helps the body’s defenses and an antigen seen in tumors from cancers like colon, breast, lung, ovary, pancreas, and stomach. Patients should discuss with their care team how this vaccine might relate to their individual situation.

A sibling is your brother or sister who shares one or both parents with you. In cancer care, having a sibling with certain cancers, like prostate cancer or melanoma, can mean a higher risk for you. It’s important to understand this term in context and talk with your care team about what it means for your health and screening.

Sickle cell anemia, also called sickle cell disease, is an inherited blood condition where red blood cells become abnormally shaped like crescents or sickles. These cells can block small blood vessels and do not live as long as normal cells, leading to pain and other health problems. It is caused by a change in a gene that affects hemoglobin, the protein that carries oxygen in the blood.

Sickle cell disease (SCD), also called sickle cell anemia, is an inherited blood disorder where red blood cells become abnormally shaped like crescents or sickles. These cells can block blood flow, causing pain, anemia, organ damage, and infections. SCD is diagnosed with blood tests and managed with treatments to reduce symptoms and complications.

A side effect is an unintended effect of a cancer treatment or medicine that happens in addition to its main purpose. Side effects can be mild or serious, temporary or long-lasting. Common side effects of cancer treatments include nausea, fatigue, hair loss, and mouth sores. Most side effects improve after treatment ends, and your health care team can help manage them.

Side-to-end coloanal anastomosis is a surgery where the side of the colon is connected to the anus after the rectum is removed. A small section of the colon is shaped into a mini-pouch to help store stool until it can be passed. This procedure helps maintain bowel function after rectal removal and is similar to the J-pouch surgery but uses a smaller pouch. Always ask your care team how this applies to your situation.

Sideropenic dysphagia, also known as Paterson-Kelly Syndrome or Plummer-Vinson Syndrome, is a condition caused by iron deficiency anemia. It leads to thin, web-like membranes forming in the throat that can make swallowing difficult. This condition may increase the risk of esophageal cancer and requires careful monitoring and management. It may also appear under related names such as Paterson-Kelly Syndrome, Plummer-Vinson Syndrome.

Sidestream smoke is the smoke that comes from the burning end of a cigarette, cigar, or pipe. It is a major part of secondhand smoke and contains many harmful chemicals, including those that can cause cancer. Breathing in sidestream smoke increases the risk of lung cancer, heart disease, and other health problems, even for people who do not smoke themselves.

Sudden Infant Death Syndrome (SIDS), also called Crib Death, is the sudden and unexplained death of a healthy baby younger than one year old, usually during sleep. The cause is unknown, and it is diagnosed only after a thorough investigation rules out other causes. Safe sleep practices and avoiding tobacco smoke can help reduce the risk.

The sigmoid colon is the S-shaped last part of the large intestine that connects to the rectum. It helps store and move waste toward the anus for elimination. This section is important in digestive health and can be involved in conditions like colon polyps, cancer, or inflammation. Doctors often examine the sigmoid colon during colonoscopy or related tests to check for problems.

A sigmoidoscope is a thin, tube-like instrument with a light and lens used to look inside the lower part of the colon and rectum. It helps doctors find abnormal growths, inflammation, or other issues. Sometimes, it can also remove small tissue samples for testing. This tool is often used in exams called sigmoidoscopies to check for signs of colorectal cancer or other bowel problems.

Sigmoidoscopy is a medical test that lets doctors look inside the lower part of your large intestine, including the rectum and sigmoid colon. It uses a thin, flexible tube with a light and camera to check for problems like bleeding, inflammation, polyps, or cancer. It helps find causes of symptoms and is also used for colorectal cancer screening.

In medicine, a sign is something a health care provider finds during an exam or test that suggests a person may have a health condition or disease. Signs can include things like fever, swelling, or changes seen on imaging. They help doctors identify possible problems but are not the same as symptoms, which are what a person feels or notices.

Signal transduction, also called cell signaling, is how cells receive and respond to messages from their surroundings. These messages often come as chemical signals like hormones or growth factors that attach to proteins on or inside cells. This process helps cells grow, divide, or die as needed. Changes in cell signaling can sometimes lead to cancer by causing cells to grow uncontrollably. Understanding signal transduction can help patients learn how some cancer treatments work.

Signal transduction inhibitors are drugs that block signals inside cells that help cancer cells grow and survive. These medicines are being studied as possible treatments for some cancers. They may slow tumor growth by interfering with cancer cell communication and by preventing new blood vessels from forming, which tumors need to grow. If you hear this term, ask your care team how it relates to your specific situation.

A signaling pathway is a series of steps inside cells where molecules pass signals to control important cell functions like growth or death. When these pathways work abnormally, they can contribute to diseases such as cancer. For patients and caregivers, it’s important to understand this term in context and ask the care team how it relates to an individual’s diagnosis or treatment.

A signature molecule, also called a biomarker or molecular marker, is a molecule found in blood, tissues, or body fluids that signals a normal or abnormal process, such as cancer. In cancer care, these molecules help doctors understand the unique features of a person’s cancer and guide treatment choices. It’s important to discuss what these results mean for your specific care with your healthcare team.

Signet ring cell carcinoma (SRCC) is a rare and aggressive type of cancer that forms in glandular cells and produces mucin, a sticky substance. It is most often found in the stomach but can also occur in other organs like the bladder, colon, and breast. SRCC cells look like signet rings under a microscope. This cancer tends to grow and spread quickly, making treatment challenging. If you hear this term, it’s important to discuss with your care team what it.

The word "significant" often means something important or meaningful in cancer care. It can refer to health effects, test results, or treatment impacts. Sometimes it appears as "statistically significant," which means a result is unlikely due to chance. If you see this term in your reports or discussions, ask your care team what it means for your health and treatment.

SIL stands for squamous intraepithelial lesion, which means an abnormal growth of squamous cells on the surface of organs like the cervix, anus, or throat. These cells look flat and thin under a microscope. SIL can be low grade or high grade, and some types may develop into cancer if untreated. It’s important to understand SIL in your own medical context and talk with your care team about what it means for you.

Sildenafil, also known by the brand name Viagra, is a medication commonly used to treat erectile dysfunction and a lung condition called pulmonary arterial hypertension. It works by relaxing blood vessels to improve blood flow. In cancer care, it may sometimes be mentioned in relation to treatments affecting the uterus or blood flow. Always ask your care team how sildenafil relates to your specific situation.

Silicon Phthalocyanine 4 is a substance being studied as a treatment for cancer. It works by becoming active when exposed to light inside cancer cells, helping to kill them. This approach is part of a treatment called photodynamic therapy. If you see this term, it’s important to ask your care team how it relates to your specific situation rather than assuming it is a diagnosis or treatment plan.

Silicone is a synthetic material used in medical devices like breast implants and esophageal stents. In cancer care, silicone may be part of treatments such as breast reconstruction after mastectomy or helping keep the esophagus open when swallowing is difficult. It’s important to understand silicone in the context of your care and ask your healthcare team how it relates to your treatment plan.

Siltuximab, also known by brand name Sylvant and other names like CNTO 328 or anti-IL-6 chimeric monoclonal antibody, is a medicine that blocks a protein called interleukin-6 (IL-6). It is mainly used to treat a rare disease called multicentric Castleman disease in patients without HIV or human herpesvirus 8. It is also being studied for some cancers and other conditions.

Colloidal Silver, also called Silver Hydrosol, is a liquid containing tiny silver particles suspended in water. Some people use it hoping to prevent or treat cancer or support the immune system, but there is no reliable evidence it works for cancer. Taking colloidal silver by mouth or inside the body can cause serious side effects and is not recommended. Always talk with your healthcare team before using it.

Milk Thistle, also known as Silybum marianum or Silymarin, is a plant extract used by some people during cancer care to support liver health, reduce side effects of treatments, and improve quality of life. It is available as a dietary supplement but is not approved as a cancer treatment. Always talk with your healthcare provider before using Milk Thistle during cancer therapy.

Milk Thistle, also called Silymarin, is a plant extract used by some people during cancer care to support liver health, reduce side effects of treatments, and improve quality of life. It is available as capsules or tablets but is not approved as a cancer treatment. Always talk with your healthcare provider before using Milk Thistle during cancer therapy.

Simian Virus 40 (SV40) is a virus originally found in some types of monkeys and also detected in humans. It was accidentally present in some polio vaccines given between 1955 and 1963. While SV40 can cause tumors in laboratory animals, there is no clear evidence that it causes cancer in people. SV40 has been important in scientific research to understand how viruses affect cells.

A simple fibroadenoma is a common, noncancerous breast lump made of fibrous and glandular tissue. It usually feels firm, round, and moves easily under the skin. Simple fibroadenomas are most often found in younger women and do not increase the risk of breast cancer. If you have one, your healthcare team can explain what it means for your breast health and whether any follow-up is needed.

A simple hysterectomy, also called a complete or total hysterectomy, is surgery to remove the uterus and cervix. Sometimes, the ovaries and fallopian tubes are also removed. This surgery can be done through the vagina or through an incision in the abdomen. It is often used to treat conditions affecting the uterus and cervix, including some cancers.

A simple mastectomy, also called a total mastectomy, is surgery to remove the entire breast, including the nipple, areola, and skin. Sometimes, nearby lymph nodes under the arm are also removed to check for cancer. This surgery is used to treat or prevent breast cancer and may be part of a larger treatment plan. If you see this term, ask your care team how it applies to your situation.

Simple nephrectomy is surgery to remove one entire kidney. It is often used to treat kidney tumors or other serious kidney problems. This surgery removes only the kidney itself, without nearby tissues. Understanding this term can help patients and caregivers discuss treatment options and recovery with their care team. This entry helps connect the word with diagnoses, testing, treatments, supportive care, research notes, protocols, media, books, people, organizations, and safety concerns.

A simple vulvectomy is surgery to remove part or all of the vulva, which includes the external female genital organs like the clitoris and vaginal lips. It can be partial (removing less than 80% of the vulva) or complete (removing more than 80%). This surgery is often used to treat vulvar cancer or precancerous conditions. Patients should ask their care team how this term applies to their specific situation.

Simulation in cancer care is a special planning session before radiation therapy. It helps your care team find and mark the exact area to target with radiation. This step ensures the treatment is as precise as possible, aiming to treat the tumor while protecting healthy tissues nearby. If you hear this term, ask your care team how it applies to your treatment plan.

Simvastatin (brand name Zocor) is a medication that lowers cholesterol and other fats in the blood. It belongs to a group called statins, which help reduce the risk of heart problems. Simvastatin is taken by mouth and is often used alongside diet and exercise. It is important to discuss with your healthcare team how simvastatin fits into your care, especially since it can interact with other drugs and certain foods like grapefruit juice.

A single nucleotide polymorphism (SNP) is a common type of change in DNA where one building block is swapped for another. These small differences can affect how people respond to medicines, infections, or risk for certain diseases. For example, some SNPs may increase the chance of muscle problems when taking the cholesterol medicine simvastatin. SNPs are important markers used in genetic testing and research.

A single-blind study is a type of clinical trial where only the researcher knows which treatment a participant receives. This helps reduce bias in the study results. For patients and caregivers, it’s important to understand this term in context and discuss with the care team how it relates to individual care decisions, rather than seeing it as a diagnosis or treatment advice.

Single-Photon Emission Computed Tomography (SPECT) is a special type of imaging test that uses a small amount of radioactive material injected into a vein to create detailed pictures of how blood flows and how tissues work inside the body. It helps doctors see not just the shape of organs but also their function, which can be important in diagnosing and monitoring cancer and other conditions.

Singulair, also known as Montelukast Sodium, is a medicine used to help manage asthma symptoms like wheezing, coughing, and chest tightness. It works by blocking substances that cause the airways in the lungs to narrow. It is not a quick-relief medicine and should be used as part of a long-term asthma care plan. Always ask your healthcare team how it applies to your specific health needs.

A sinus is a hollow space or cavity in the body, such as the air-filled spaces around the nose called paranasal sinuses. In cancer care, sinuses may be mentioned when discussing infections, symptoms, or rare cancers in these areas. Understanding the term in context helps patients and caregivers ask the right questions about symptoms or treatments related to sinuses.

Sinusitis is an inflammation or swelling of the tissue lining the sinuses, the hollow spaces around the nose. It can cause symptoms like facial pain, headache, stuffy or runny nose, and fever. In cancer care, sinus infections may occur more often because treatments like chemotherapy can weaken the immune system. If infection happens, doctors may prescribe antibiotics such as Avelox, but these medicines have important risks and should be used carefully.

Sinusoidal Obstruction Syndrome, also called hepatic veno-occlusive disease, is a condition where small veins in the liver become blocked. This can reduce blood flow and cause liver damage. It often happens after a stem cell transplant, especially in people with kidney or lung problems. Defibrotide sodium (brand name Defitelio) is a medicine approved to treat this condition by helping improve blood flow inside the liver.

Siplizumab, also called MEDI-507, is an experimental monoclonal antibody being studied for certain T-cell lymphomas and to help prevent organ or tissue rejection after kidney or bone marrow transplants. It works by targeting a protein called CD2 on some immune and cancer cells. Siplizumab is not yet a standard treatment and is mainly available through clinical trials.

Sipple Syndrome, also known as MEN2A or Multiple Endocrine Neoplasia type 2A, is a rare inherited condition affecting hormone-producing glands. It raises the risk of medullary thyroid cancer, tumors in the adrenal glands called pheochromocytomas, and parathyroid gland problems. These glands may produce excess hormones, causing symptoms like high blood pressure or kidney stones. It is caused by a mutation in the RET gene.

Sipuleucel-T, also known as APC 8015 or Provenge, is a type of cancer treatment vaccine used for prostate cancer that has spread and no longer responds to hormone therapy. It uses a patient’s own immune cells, modified in a lab, to help the immune system recognize and attack prostate cancer cells. It is meant for men with few or no symptoms and is not a cure but may help slow cancer growth.

Sirolimus (brand name Rapamune) is a drug used to prevent organ transplant rejection and to treat certain rare diseases, including a rare lung condition called lymphangioleiomyomatosis (LAM) and a rare cancer called PEComa. It works by suppressing the immune system and blocking a protein involved in cell growth. Sirolimus is also available as Fyarro, a special form used to treat advanced PEComa.

Sirolimus protein-bound particles, sold as Fyarro, is a form of the drug sirolimus used to treat adults with a rare cancer called malignant perivascular epithelioid cell tumor (PEComa) that has spread or cannot be removed by surgery. This form may work better and cause fewer side effects than other forms of sirolimus. It works by blocking a protein involved in tumor growth and blood vessel formation.

Systemic Inflammatory Response Syndrome (SIRS) is a serious condition where the body has widespread inflammation. It can happen due to infections, injuries, surgery, or other health problems. SIRS is diagnosed when a person shows signs like fever or low body temperature, fast heartbeat, rapid breathing, or abnormal white blood cell counts. It is important to understand SIRS in context and talk with your care team about what it means for you.

SJG-136 is a substance being studied as a possible cancer treatment. It belongs to a group of drugs called DNA cross-linking agents, which work by damaging cancer cells’ DNA to stop them from growing. If you see this term, it’s important to ask your care team how it relates to your specific situation rather than assuming it means a diagnosis or treatment plan.

Sjögren Syndrome is an autoimmune disease that mainly affects the tear and salivary glands, causing dry eyes and mouth. It can also affect other glands and organs, leading to symptoms like joint pain, fatigue, and dryness in other parts of the body. If you see this term, ask your care team how it relates to your health, as it varies from person to person.

SK&F106615, also called atiprimod or azaspirane, is an experimental drug studied for certain advanced cancers like multiple myeloma. It may slow tumor growth by blocking signals cancer cells use and by preventing new blood vessels from forming, which tumors need to grow. It is not yet a standard treatment and is mainly available through research studies or clinical trials.

In cancer care, the term skeletal relates to the bones and musculoskeletal system. Sometimes, chiropractic treatments are used alongside cancer care to help manage bone or joint discomfort caused by cancer or its treatments. It’s important to understand how the term applies to your situation and to discuss with your care team before considering any complementary therapies.

The skeleton is the body’s framework made of bones and cartilage that supports soft tissues and protects organs. In cancer care, understanding the skeleton helps patients learn how cancers or treatments may affect bones or nearby tissues. It’s important to ask your care team how the skeleton relates to your diagnosis and treatment plan.

Skin cancer is a disease where cancer cells form in the skin’s tissues. The most common types are basal cell carcinoma, squamous cell carcinoma, and melanoma. It often appears on sun-exposed areas like the face, neck, and hands. Early detection and treatment are important. Protecting your skin from ultraviolet (UV) rays and checking for changes in moles or spots can help reduce risk.

Skin conduction, also called electrodermal response or galvanic skin response, measures changes in the skin’s electrical activity caused by nerves and sweat glands. These changes can happen during emotional stress or physical events like menopause hot flashes. In cancer care, this measurement may appear in reports or tests but is not a diagnosis or treatment by itself. Always ask your care team what it means for your personal health.

A skin graft is a surgical procedure where skin is moved from one part of the body to another. It is often used to replace skin lost due to injury, surgery, or cancer treatment. In vulvar cancer care, skin grafts may be needed after removing affected tissue to help healing and restore appearance and function.

A skin patch is an area of skin that looks different from the surrounding skin. Some patches, like actinic keratosis, are rough or scaly and caused by sun damage. These patches are not cancer but can sometimes develop into skin cancer if untreated. It’s important to have unusual or persistent patches checked by a healthcare provider to decide if treatment or monitoring is needed.

Skin stimulation involves applying pressure, rubbing, temperature changes, or certain substances to the skin to help reduce or block pain. It is not a diagnosis or treatment by itself but a method that may be part of managing pain or discomfort. Patients and caregivers should always discuss how skin stimulation fits into their care with their healthcare team.

A skin tag, also called an acrochordon, is a small, soft, harmless bump that grows on the skin, often where skin folds like the neck or armpits. These common growths are not cancer and usually do not cause pain. Noticing a skin tag during cancer care can be confusing, but understanding it is benign helps patients focus on more important health concerns.

A skin test checks how your immune system reacts to a substance placed just under the skin, often on the forearm. The most common example is the Mantoux test, used to screen for tuberculosis (TB) exposure. The test involves a small injection and is read a few days later for a skin reaction. It’s important to understand what the test means for you personally by discussing results with your care team.

A skin vesicle, also called a blister, is a small, fluid-filled bubble that forms on the outer layer of the skin. Blisters can cause discomfort and need careful care to prevent infection. In cancer care, blisters may appear as side effects of treatments like radiation or chemotherapy or from infections. If you notice blisters, it’s important to talk with your healthcare team about what they mean for you.

A skinning vulvectomy is a surgery that removes the top layer of skin from the vulva, which includes the external female genital organs like the clitoris, vaginal lips, and vaginal opening. It may be done partially or totally, sometimes using skin grafts to cover the area. This procedure is often part of treatment for vulvar cancer or precancerous conditions. Patients should ask their care team how this surgery applies to their specific situation.

The skull, also called the cranium, is the set of bones that form the head and protect the brain. It includes the bones around the brain and those that shape the face, such as the jaw and eye sockets. In cancer care, understanding the skull helps when tumors or treatments affect these bones or nearby nerves. If you see the word skull in your medical reports, ask your care team what it means for your specific situation.

SL-11047 is a substance being studied as a possible treatment for lymphoma, a type of cancer that affects the lymphatic system. It belongs to a group of drugs called polyamine analogs. If you see this term, it’s important to discuss with your care team what it means for your specific situation rather than assuming it is a diagnosis or treatment plan.

The SLC24A5 gene helps control skin, hair, and eye color. Changes (mutations) in this gene can cause oculocutaneous albinism, a condition where people have very light skin, hair, and eyes and may have a higher risk of skin cancer. If you see this term in your medical information, ask your care team what it means for you personally rather than assuming it is a diagnosis or treatment plan.

The SLC45A2 gene helps make melanin, the pigment that colors skin, hair, and eyes. Changes in this gene can cause oculocutaneous albinism, a condition leading to very light skin and hair and a higher risk of skin cancer. In cancer care, SLC45A2 is also studied as a target for certain melanoma treatments. Patients should discuss what this gene means for their care with their medical team.

SLE, also known as lupus or systemic lupus erythematosus, is a chronic inflammatory disease where the immune system mistakenly attacks healthy tissues. It can affect many parts of the body, including joints, skin, heart, lungs, kidneys, and the nervous system. Symptoms vary widely, and not everyone has the same signs. Understanding SLE in context and discussing it with your care team is important for personalized care.

Sleep apnea is a common sleep disorder where breathing stops or becomes very shallow during sleep. It can cause loud snoring, daytime sleepiness, and increase risks for heart problems, stroke, and other health issues. For people with cancer, sleep apnea may affect overall health and treatment. It’s important to talk with your care team about what sleep apnea means for you personally.

Sleep disorders are problems that disrupt normal sleep patterns, such as trouble falling asleep, staying asleep, or breathing issues during sleep. They are common in people with cancer and can be caused by the cancer itself, treatments, or other health issues. Managing sleep disorders often involves supportive care to relieve symptoms and improve rest, which is important for overall health and coping with cancer.

Sleep stages are parts of the sleep cycle that your brain goes through each night. There are four main stages: three happen during non-rapid eye movement (non-REM) sleep, when your body moves from light to deep sleep, and one during rapid eye movement (REM) sleep, when most dreaming occurs. Understanding sleep stages can help you and your care team talk about sleep quality and its effects on health.

A sleeve lobectomy, also called sleeve resection, is a surgery that removes one lobe of the lung along with part of the main airway (bronchus). After removal, the airway ends are reconnected to preserve as much lung function as possible. This procedure is often used to treat lung cancer while saving lung tissue. If you see this term, ask your care team how it applies to your specific situation.

Sleeve resection, also called sleeve lobectomy, is a lung surgery that removes one lobe of the lung along with part of the main airway (bronchus). After removal, the airway ends are reconnected to save as much healthy lung as possible. This surgery is often used to treat lung cancer while preserving lung function. If you see this term, ask your care team how it applies to your specific situation.

Slippery Elm is a tree native to eastern North America, also known as Gray Elm, Indian Elm, Red Elm, Sweet Elm, Ulmus fulva, and Ulmus rubra. Its inner bark has been used traditionally to soothe irritated tissues and may have antioxidant effects. It is sometimes mentioned in cancer care for symptom relief or supportive care but is not a proven cancer treatment. If you see this term in your care, ask your healthcare team what it means for you.

A slit-lamp eye exam is a test that uses a special microscope with a narrow beam of light to look closely at different parts of the eye, such as the retina and optic nerve. It helps doctors check eye health and can be part of cancer-related care. If you see this term, ask your care team what it means for your specific situation rather than assuming it is a diagnosis or treatment.

A slit-lamp eye exam is a test that uses a special microscope with a narrow beam of light to look closely at different parts of the eye, such as the retina and optic nerve. It helps doctors check eye health and may be used during cancer care to monitor changes related to the disease or its treatment. If you see this term, ask your care team how it applies to your situation.

Small lymphocytic lymphoma (SLL) is a slow-growing cancer that affects certain white blood cells called lymphocytes, mainly in the lymph nodes. It is closely related to chronic lymphocytic leukemia (CLL), with both considered different forms of the same disease. SLL is a type of non-Hodgkin lymphoma and is most often seen in adults over 50 years old. Treatment options include targeted therapies like Calquence and Brukinsa.

SM-AHN, or systemic mastocytosis with associated hematologic neoplasm, is a rare condition where too many mast cells build up in the body alongside another blood disorder. This buildup can affect organs like the bone marrow, liver, spleen, and intestines. SM-AHN usually occurs in adults. Understanding this term in your personal medical context is important, so ask your care team for details about what it means for you or your loved one.

Small Cell Carcinoma, also called Oat Cell Cancer, is a fast-growing and aggressive cancer that most often starts in the lungs but can also develop in other organs like the cervix, prostate, bladder, and stomach. It tends to spread quickly and may cause additional symptoms due to hormone changes. Understanding this diagnosis helps patients and caregivers ask the right questions and plan care.

Small cell lung cancer is a fast-growing type of lung cancer that starts in the lung tissues. It is different from the more common non-small cell lung cancer and may spread quickly to other parts of the body. Knowing the type and stage of lung cancer helps your care team decide the best treatment plan, which may include chemotherapy, radiation, surgery, or other therapies.

The small intestine is a long, narrow tube that connects the stomach to the large intestine. It helps digest food and absorb nutrients. Small intestine cancer is rare but can cause symptoms like belly pain, unexplained weight loss, blood in stool, or a lump in the abdomen. Imaging tests and surgery are common ways to diagnose and treat this cancer.

Small intestine cancer is a rare type of cancer that starts in the small intestine, the long tube connecting the stomach to the large intestine. Risk factors include a high-fat diet, Crohn’s disease, celiac disease, and a history of colon polyps. Symptoms may include abdominal pain, unexplained weight loss, blood in the stool, or a lump in the abdomen. Imaging tests help diagnose and check for spread. Surgery is the most common treatment.

Small Lymphocytic Lymphoma (SLL) is a slow-growing type of non-Hodgkin lymphoma that mainly affects lymph nodes. It involves too many immature white blood cells called lymphocytes, causing swollen lymph nodes. SLL is closely related to chronic lymphocytic leukemia (CLL), which affects blood and bone marrow. Understanding the term in your medical records and asking your care team how it applies to your situation is important.

Small-molecule drugs are cancer medicines taken as pills or capsules. They are small enough to enter cancer cells easily and target specific proteins inside the cells to help stop cancer growth. Many targeted cancer treatments are small-molecule drugs, which can be taken by mouth, unlike some other cancer drugs that need to be injected.

Smokeless tobacco is tobacco that is not burned or smoked but used by chewing, dipping, or sniffing. It contains nicotine and harmful chemicals that can cause addiction and increase the risk of cancers, especially in the mouth, esophagus, and pancreas. It can also lead to dental problems and heart disease. There is no safe level of smokeless tobacco use, and it is not a safe alternative to smoking cigarettes.

Smoking cessation means quitting smoking. It lowers the risk of cancer and other serious health problems. In cancer care, quitting smoking can improve treatment results and reduce complications. Support may include counseling, medicines, and nicotine replacement products. Patients and caregivers should ask their care team how smoking cessation fits their personal treatment plan.

Smoldering myeloma is an early, slow-growing form of multiple myeloma, a cancer of plasma cells. People with smoldering myeloma usually have no symptoms but need regular check-ups to watch for signs that the disease is progressing to active multiple myeloma, which can cause bone damage and other health problems. This entry helps connect the word with diagnoses, testing, treatments, supportive care, research notes, protocols, media, books, people, organizations, and safety concerns.

SN-38 liposome is a form of the chemotherapy drug irinotecan where the active drug SN-38 is enclosed in tiny fat-like particles called liposomes. This design may help the drug work better and cause fewer side effects. It is being studied mainly for advanced colorectal cancer and other cancers. If you see this term, ask your care team how it relates to your treatment, as it is not yet a standard therapy.

SNDX-275, also called entinostat, is a drug being studied in clinical trials for treating several types of cancer. It works by blocking enzymes that cancer cells need to grow and divide. This drug is not yet a standard treatment. If you see this term in your medical information, ask your care team how it relates to your specific situation.

Snet2, also known as Tin Ethyl Etiopurpurin, is a drug used in cancer treatment and prevention. It belongs to a group called photosensitizing agents, which work by reacting to light. Patients may see this term in medical reports or educational materials. It’s important to discuss with your care team how this drug relates to your specific situation rather than assuming it means a certain diagnosis or treatment plan.

A single nucleotide polymorphism (SNP) is a common change in the DNA where one building block is replaced by another. SNPs can affect how people respond to medicines, infections, or disease risks. For example, certain SNPs may increase the chance of muscle problems when taking the cholesterol medicine simvastatin. SNPs are important markers used in genetic testing and research.

SNRI stands for serotonin-norepinephrine reuptake inhibitor, a type of medication used to treat depression, anxiety, and some types of chronic pain. These drugs work by increasing the levels of serotonin and norepinephrine in the brain, which can help improve mood and relieve symptoms. Common SNRIs include venlafaxine (Effexor) and duloxetine (Cymbalta). Side effects may occur, so it’s important to discuss their use with your healthcare team.

Snuff tobacco is a type of smokeless tobacco made from finely ground or shredded tobacco leaves. It is used by placing moist snuff in the mouth between the cheek and gum or inhaling dry snuff through the nose. Snuff contains nicotine and harmful chemicals that can cause addiction and increase the risk of cancers of the mouth, esophagus, and pancreas, as well as other health problems.

SNX 111, also known as Prialt or ziconotide, is a medication used to treat severe chronic pain. It is given directly into the fluid around the spinal cord through a special pump. This treatment is usually considered when other pain medicines have not worked or cannot be used. If you see this term in your medical records, ask your care team how it applies to your situation.

SNX-5422 is a substance being studied for cancer treatment. It works by blocking a protein that cancer cells need to grow, which may help kill these cells. If you see this term, it’s important to ask your care team how it relates to your specific situation rather than assuming it is a diagnosis or treatment plan.

SNX-5422 Mesylate is a substance being studied in cancer treatment. It works by blocking a protein that cancer cells need to grow, which may help kill these cells. If you see this term in your medical information, it’s important to ask your care team how it relates to your specific situation rather than assuming it is a diagnosis or treatment plan.

Soblidotin, also known as TZT-1027, is a substance being studied as a possible treatment for cancer. It belongs to a group of drugs called tubulin inhibitors, which work by affecting how cancer cells grow. If you see this term in your medical information, it’s important to ask your care team what it means for your specific situation rather than assuming it is a diagnosis or treatment plan.

Social determinants of health (SDOH) are the social, economic, and environmental factors that affect a person’s health and well-being. These include things like education, income, housing, transportation, access to healthy food, clean air and water, and health care services. SDOH can influence cancer risk, treatment outcomes, and overall quality of life.

Social service refers to community support that helps people manage health and daily needs. This can include help with transportation to medical appointments, home delivery of medicines and meals, nursing care at home, and assistance with medical costs. Social services also offer emotional support through groups and therapists, helping patients and caregivers cope with stress and maintain a healthy lifestyle.

Social support means having family, friends, neighbors, or community members who provide help and care during times of need. For people with cancer, social support can include emotional comfort, practical help, and advice. It plays an important role in coping with cancer and its treatment, especially when facing stress, depression, or other challenges.

A social worker is a trained professional who helps people and their families cope with the emotional, physical, and practical challenges of cancer. They can provide support, guidance, and connect you to services like counseling or financial help. Social workers are part of the cancer care team and can assist patients and caregivers in managing changes and concerns during treatment and beyond.

Socioeconomic status (SES) describes a person’s or family’s social and economic position based on education, income, and type of job. It is often grouped as low, medium, or high. SES can affect access to healthcare, healthy food, and social support, which may influence overall health and cancer care outcomes. Understanding SES helps care teams provide support tailored to each patient’s situation.

SOD1 Inhibitor ATN-224, also called ATN-224, is an experimental drug being studied for cancer treatment. It may help stop tumors from growing by blocking new blood vessel formation and interfering with enzymes cancer cells need to grow. It is not yet a standard treatment and is still being tested for safety and effectiveness.

Sodium is a mineral essential for keeping your body’s fluids balanced and helping nerves and muscles work properly. It’s found in table salt and many processed foods. Some alternative sources mention sodium bicarbonate (baking soda) in cancer care, but these uses are not proven treatments. Too much sodium can raise blood pressure, which may affect overall health during cancer treatment.

Sodium Bicarbonate, also known as baking soda, is sometimes mentioned in cancer discussions as a way to change body or tumor acidity. Some alternative sources promote it for cancer prevention or treatment, but there is no strong scientific evidence that it can treat or cure cancer. It should never replace standard cancer therapies. This entry explains what it means and why it matters in cancer care.

Sodium Bicarbonate, commonly known as baking soda, is sometimes mentioned as a cancer therapy based on ideas about body acidity. However, there is no strong scientific evidence that it can treat or cure cancer. While safe in small amounts for household use, it should never replace standard cancer treatments like chemotherapy or radiation.

Sodium borocaptate, also called BSH, is a drug used in a special radiation treatment called boron neutron capture therapy (BNCT). It is given through a vein and collects mainly in tumor cells. When combined with neutron radiation, it helps produce particles that kill cancer cells while protecting healthy tissue nearby.

Sodium ferric gluconate, also known by the brand name Ferrlecit, is an iron-containing medication given through a vein to treat anemia caused by low iron levels in the blood. It helps increase red blood cell counts, especially in people who cannot take iron by mouth or need iron quickly. Patients may see this term in medical notes or treatment plans related to anemia management.

Sodium salicylate is a type of nonsteroidal anti-inflammatory drug (NSAID) that can relieve pain and reduce fever. It is related to aspirin and may be used by people who are sensitive to aspirin. Sodium salicylate is also found in some cosmetics and personal care products as a preservative. If you see this term in your care, ask your healthcare team how it applies to your treatment or symptoms.

Sodium stibogluconate (also called SSG) is a medicine mainly used to treat leishmaniasis, an infection caused by parasites. It may also block enzymes that help some cancers grow, so it is being studied in cancer care. It is given by slow injection and can cause side effects like nausea, tiredness, and joint pain. If you see this term, ask your care team what it means for your specific situation.

Sodium sulfite is a chemical used mainly in industries like paper making, photography, and water treatment. It is sometimes mentioned as an ingredient in unproven cancer treatment mixtures, but it has no proven ability to treat or prevent cancer. Patients should always discuss any mention of sodium sulfite with their healthcare team to understand its relevance to their care.

Sodium thiosulfate anhydrous, also called Pedmark, is a medicine used to help protect children aged 1 month and older from hearing loss caused by the chemotherapy drug cisplatin. It belongs to a group of medicines called chemoprotective agents, which help reduce harmful side effects of cancer treatments without treating the cancer itself.

A Soft Diet or Liquid Diet during cancer treatment includes foods that are easy to chew, swallow, and digest. It often consists of cooked, mashed, pureed, or blended foods and liquids. This diet helps patients maintain nutrition and manage side effects like mouth sores or difficulty swallowing during treatment. It supports digestion, immune health, and treatment tolerance but is not a cure for cancer.

A Soft Diet or Liquid Diet during cancer treatment includes foods and drinks that are easy to chew, swallow, and digest. It helps patients maintain nutrition and manage side effects like mouth sores or swallowing difficulties. This diet supports digestion, immune health, and treatment tolerance but is not a cure for cancer. Patients should discuss any diet changes with their healthcare team.

The soft palate is the back, soft part of the roof of the mouth made of muscle. It plays an important role in swallowing, speaking, and breathing. In cancer care, tumors may affect the soft palate, which can influence symptoms like trouble swallowing or changes in speech. Understanding the soft palate helps patients and caregivers better follow diagnosis and treatment plans involving the mouth or throat.

Soft tissue includes muscles, fat, tendons, blood vessels, nerves, and other supporting tissues in the body. Soft tissue sarcoma is a rare cancer that starts in these tissues and can occur anywhere but is most common in the arms, legs, chest, and abdomen. Symptoms and treatment vary depending on the type and stage of cancer. If you see this term, ask your care team how it relates to your specific situation.

Soft tissue sarcoma is a rare type of cancer that starts in the soft tissues of the body, such as muscles, fat, tendons, blood vessels, and nerves. These cancers can appear anywhere but are often found in the arms, legs, chest, or abdomen. Symptoms and treatment vary depending on the type and stage of the cancer. Understanding this term helps patients and caregivers discuss diagnosis and care with their medical team.

Solar keratosis, also called actinic keratosis or senile keratosis, is a rough, scaly patch of skin caused by long-term sun exposure. It usually appears on sun-exposed areas like the face, scalp, hands, or chest. While not cancer, it is considered precancerous because it can sometimes develop into skin cancer if untreated. Monitoring and treatment can help protect your skin health.

A solid tumor is an abnormal lump of tissue that can be either noncancerous (benign) or cancerous (malignant). Unlike blood cancers, solid tumors form masses in organs or tissues. They include many common cancers like breast, lung, and bladder cancer. Understanding the term solid tumor helps patients and caregivers discuss diagnosis and treatment options clearly with their care team.

Soliris, also called eculizumab, is a medicine used to treat rare blood disorders like paroxysmal nocturnal hemoglobinuria (PNH) and atypical hemolytic uremic syndrome (aHUS). It works by protecting red blood cells from being destroyed and preventing harmful blood clots. Because it affects the immune system, people taking Soliris need special vaccinations to reduce the risk of serious infections.

Soltamox, also known as tamoxifen citrate, is a hormone therapy drug used to treat breast cancer in women and men. It works by blocking estrogen’s effects in breast tissue, which may help stop cancer cells from growing. It is also used to lower the risk of breast cancer in women at high risk and to prevent invasive breast cancer after certain breast conditions. Soltamox is a type of selective estrogen receptor modulator (SERM).

Soluble means able to dissolve in a liquid. In cancer care, understanding solubility helps explain how vitamins like vitamin E (alpha-tocopherol) and vitamin D work in the body. These nutrients support overall health but are not treatments or cures for cancer. Patients should discuss with their care team how soluble substances relate to their nutrition and treatment.

A solvent is a liquid that dissolves other substances, helping medicines like chemotherapy drugs travel through the body. Some older cancer treatments use solvents that can cause side effects. Newer methods aim to deliver drugs without these solvents to reduce side effects. If you see the word solvent in your care, ask your healthcare team how it relates to your treatment and what it means for you.

Somatic refers to changes or mutations in the cells of the body that are not inherited from parents. Somatic testing looks for these genetic changes in a tumor or blood sample to help understand the cancer and guide treatment. It is important to ask your care team how somatic findings apply to your specific situation, as the term alone is not a diagnosis or treatment plan.

A somatic cell is any cell in the body except the reproductive cells (sperm and egg). These cells make up organs, skin, blood, and tissues. Unlike reproductive cells, somatic cells do not pass genetic information to children. Understanding somatic cells helps explain how body cells grow, divide, and sometimes change in cancer. If you see this term in your care, ask your healthcare team what it means for your situation.

A somatic mutation is a change in the DNA that happens in any cell of the body except the egg or sperm cells. These changes occur after conception and are not inherited or passed on to children. Somatic mutations can sometimes lead to cancer or other diseases. Understanding this term in your medical reports can help you discuss its meaning and impact with your care team.

Somatic testing is a lab test done on cancer cells to find genetic changes that happened during a person’s life, not inherited from parents. It helps doctors learn more about the cancer and choose treatments that target specific changes in the tumor. This testing is different from genetic tests that look for inherited risks of cancer in blood or saliva samples.

A somatic variant, also called a somatic mutation, is a change in the DNA that happens in body cells during a person’s life. These changes are not inherited from parents and cannot be passed to children. Somatic variants can sometimes lead to cancer or other diseases by causing cells to grow abnormally. Understanding somatic variants helps doctors learn about cancer and guide treatment.

Somatomedin, also called insulin-like growth factor (IGF), is a protein made by the body that helps many types of cells grow and survive. It plays an important role in childhood growth and tissue repair in adults. Some cancers may use IGF to grow faster. Patients may see this term in medical reports or treatment discussions, and it’s important to ask your care team how it relates to your specific situation.

Somatostatin receptors are proteins found on many cells, including some cancer cells. Measuring these receptors in tumor tissue can help doctors diagnose certain cancers and plan treatments. Some medicines and scans target these receptors to find or treat tumors, especially neuroendocrine tumors. Patients should always ask their care team how this term relates to their specific situation.

Somatostatin Receptor Scintigraphy (SRS), also called an Octreotide Scan, is a special imaging test that uses a small amount of a radioactive drug similar to the hormone somatostatin. It helps doctors find certain tumors, especially neuroendocrine tumors, by showing where tumor cells with somatostatin receptors are located in the body.

Somatotropin, also called growth hormone, is a protein made by the pituitary gland that helps control body growth and how the body uses energy. Too much growth hormone can cause acromegaly, a condition often linked to a noncancerous pituitary tumor. Understanding this hormone is important because it affects growth, hormone balance, and may be involved in some tumors.

Somatuline Depot, also known as lanreotide acetate, is a medication used to treat certain rare tumors called gastroenteropancreatic neuroendocrine tumors (GEP-NETs). It works by mimicking a natural hormone to reduce excess hormone production and may help slow tumor growth. It is given as a long-acting injection, usually once a month, and can also help manage symptoms caused by hormone overproduction.

Somnolence Syndrome is a condition seen mainly in children after radiation therapy to the head, causing periods of drowsiness, tiredness, loss of appetite, and irritability. It describes feeling very sleepy or sluggish and is important to understand in the context of cancer care. If you see this term, ask your healthcare team what it means for you or your loved one.

Sonidegib phosphate, also known as erismodegib, LDE225, or Odomzo, is a medicine used to treat locally advanced basal cell carcinoma (a type of skin cancer) that has returned after surgery or radiation, or when these treatments are not possible. It works by blocking proteins involved in tissue growth, which may help stop cancer cells from growing. It is taken by mouth and is being studied for other cancers.

A sonogram, also called an ultrasonogram, is a safe and painless test that uses sound waves to create pictures of the inside of the body. In cancer care, it helps find tumors, check if cancer has spread, or monitor how well treatment is working. The test uses a small device called a transducer that sends sound waves and captures echoes to form images on a screen.

SOP stands for Standard Operating Procedure. It means written instructions that explain how to do a specific task in a consistent way. In cancer care, SOPs help ensure tests, treatments, and clinical trial steps are done correctly. For patients and caregivers, it’s important to understand SOP in context and ask your care team what it means for your personal care, rather than seeing it as a diagnosis or treatment by itself.

Sorafenib tosylate, also known as Nexavar or BAY 43-9006, is a targeted cancer medicine used to treat certain liver, kidney, and thyroid cancers. It works by blocking proteins that help cancer cells grow and by stopping tumors from making new blood vessels they need to survive. It is taken as a pill and may be discussed as a treatment option when other therapies have not worked.

Sorivudine is an antiviral drug used to treat infections caused by viruses in the herpes family, such as the varicella zoster virus. It works by interfering with the virus’s ability to copy its DNA. Patients should always discuss with their care team how sorivudine might relate to their treatment, especially because it can interact dangerously with some chemotherapy drugs like fluorouracil.

Sorrel, also called dock or sheep sorrel, is a plant sometimes mentioned in cancer care discussions about herbal or natural supplements. While it has traditional uses and may have antioxidant properties, sorrel is not a standard or proven cancer treatment. Patients may see different names for this plant, so it’s helpful to check the exact term and ask the care team how it relates to their care.

Sotorasib, also known as Lumakras, is a targeted cancer drug used to treat certain types of non-small cell lung cancer and colorectal cancer with a specific KRAS gene mutation called G12C. It works by blocking a protein made by this mutated gene, which may help slow or stop cancer growth. Patients should talk with their care team about how this drug fits their treatment plan.

Sound Healing is a complementary practice using music, tones, or vibrations to promote relaxation, emotional comfort, and spiritual support. In cancer care, some people explore it to help reduce stress, improve mood, support sleep, or enhance quality of life. It is not a cancer treatment but may be part of supportive care. Always discuss its use with your healthcare team to ensure it fits safely with your medical care.

Graviola, also known as Soursop or Annona muricata, is a tropical plant traditionally used in herbal medicine. Some people with cancer explore it for possible anticancer effects, symptom relief, or nutrition support. However, there is no strong evidence that Graviola treats cancer in people. If you are considering using it during cancer care, discuss it with your healthcare team to ensure safety and avoid interfering with treatments.

Soy, also known as Glycine max, soya, or soybean, is a plant product used in many foods. It contains natural compounds called isoflavones that are being studied for their possible effects on cancer prevention and other health issues. Soy may appear in medical reports or treatment discussions, but its presence does not mean it is a cancer treatment. Patients should ask their care team how soy relates to their care.

Soya, also known as Glycine max, soy, or soybean, is a plant originally from East Asia that produces beans used in many foods. It contains natural compounds called isoflavones, which are being studied for possible health benefits, including cancer prevention, easing menopause symptoms, and supporting bone and heart health. Soy is common in diets and supplements but is not a proven cancer treatment.

Soybean, also called soy or soya (Glycine max), is a legume native to East Asia and widely grown for its edible beans. Soy contains natural compounds like isoflavones that are being studied for possible effects on cancer prevention and heart health. While soy foods are common in many diets, research is ongoing to understand their role in cancer care. Soybean may appear under different names in reports or studies.

A spasm is a sudden, involuntary tightening or contraction of a muscle or group of muscles. In cancer care, spasms may cause discomfort or pain and can sometimes be managed with treatments like Botox or medications such as baclofen. It’s important to understand spasms as symptoms that need personalized care rather than as a diagnosis or direct cancer treatment.

Spastic colon, also known as irritable bowel syndrome (IBS), irritable colon, or mucus colitis, is a common digestive condition causing abdominal pain, bloating, and changes in bowel habits like diarrhea or constipation. It does not damage the intestines but can cause ongoing discomfort. Understanding this term helps patients and caregivers discuss symptoms and care with their healthcare team.

A specialist is a doctor or health care professional who has advanced training and experience in a specific area of medicine. Examples include oncologists, who focus on cancer care, and hematologists, who specialize in blood disorders. Specialists help diagnose, treat, and manage complex health conditions that require expert knowledge beyond general medical care.

Specific immune cells are immune system cells, like T or B lymphocytes, that recognize and respond to one particular foreign substance or antigen. These cells play a key role in targeting infections or cancer cells. If you see this term in your care, it’s important to ask your healthcare team how it relates to your treatment or diagnosis, rather than assuming it means a specific condition or therapy.

Specificity is a term used in medical testing to describe how well a test correctly identifies people who do not have a particular disease. It refers to the percentage of people without the disease who get a negative test result. Understanding specificity helps patients and caregivers interpret test results more accurately and discuss their meaning with the care team.

SPECT, or single-photon emission computed tomography, is a special imaging test that uses a small amount of radioactive material injected into the body. A scanner then creates detailed 3D pictures showing how blood flows and how cells are working inside tissues. This helps doctors see not just the shape but also the activity of tumors or other areas of concern.

Spectroscopy is a medical technique that studies how light interacts with tissues. It helps researchers and doctors learn about cells by measuring how they absorb or reflect light. In cancer care, it is being studied to help identify early changes in cells and to check for cancer cells left after surgery. Patients should ask their care team how spectroscopy applies to their own situation rather than assuming it means a diagnosis or treatment.

A speculum is a medical tool used to gently open a body opening, such as the vagina or anus, so a healthcare provider can look inside more easily. It helps doctors see areas that might need closer examination or treatment. Specula come in different shapes and sizes depending on the area being examined and are commonly used during exams related to reproductive or digestive health.

A speech pathologist, also called a speech therapist, is a specialist who helps people with problems speaking, understanding language, or swallowing. They evaluate and treat communication and swallowing difficulties that may arise from cancer or its treatment. If you see this term in your care, ask your healthcare team how it applies to your situation.

A speech therapist, also called a speech pathologist, is a specialist who evaluates and treats problems with speaking, understanding language, and swallowing. They help people who have communication difficulties caused by conditions like stroke, brain tumors, or cancer treatments. Speech therapists work with patients to improve speech, language skills, and swallowing abilities through personalized therapy.

Sperm are the male reproductive cells made in the testicles. They carry genetic material needed to fertilize an egg and create a pregnancy. For men facing cancer treatment, sperm banking before treatment may help preserve fertility. After treatment, regular follow-up is important to check for cancer return and monitor reproductive health.

Sperm aspiration is a procedure that collects sperm directly from the testicle or epididymis using a small needle. It helps men who have fertility problems caused by a blockage that prevents sperm from being ejaculated. The collected sperm can be used immediately for fertility treatments or frozen for future use. It is often considered when cancer treatments or other conditions affect natural sperm ejaculation.

Sperm banking, also called sperm cryopreservation, is a way to collect and freeze sperm for future use. It is the most common method for males who have gone through puberty to preserve fertility before treatments like chemotherapy or radiation that might affect their ability to have children later. It may also appear under related names such as Sperm Cryopreservation.

Sperm count is the number of sperm cells found in a sample of semen. In men with cancers like testicular or prostate cancer, sperm count may be low even before treatment. Cancer treatments such as chemotherapy or radiation can also reduce sperm count, affecting fertility. Patients should discuss what sperm count means for their individual situation with their care team rather than interpreting the term alone.

Sperm cryopreservation, also called sperm banking, is a way to collect and freeze sperm for future use. It is commonly used by males who have gone through puberty before cancer treatments that might affect fertility. The frozen sperm can later be used to help have biological children. Your health care team can guide you on timing and options for fertility preservation.

Sperm retrieval is a medical procedure where sperm is collected directly from a man’s testicle or epididymis using a fine needle or other instruments. It is often used when sperm cannot be ejaculated naturally due to blockages or fertility problems. This procedure can help men preserve fertility before cancer treatment or assist with fertility after treatment. It is important to discuss with your care team how sperm retrieval fits your personal situation.

The spermatic cord is a cord-like structure in males that runs from the abdomen to each testicle. It contains blood vessels, nerves, lymph vessels, and the vas deferens, which carries sperm. It is important in testicular cancer because cancer can sometimes spread into the spermatic cord. Understanding this term can help patients and caregivers ask the right questions about diagnosis and treatment.

Spermicide is a chemical that kills sperm to help prevent pregnancy. It comes in forms like creams, gels, foams, and films, and can be used alone or with other birth control methods such as condoms or diaphragms. Spermicides do not protect against sexually transmitted infections (STIs) and should be used carefully, especially if there is a risk of STI exposure.

SPF, or Sun Protection Factor, is a number that shows how well a sunscreen protects your skin from sunburn caused by ultraviolet (UV) rays. Higher SPF numbers mean more protection. Using sunscreen with SPF 15 or higher, along with other sun safety steps, helps reduce skin damage and the risk of skin cancer. Always ask your care team how SPF relates to your personal skin health and cancer care.

The sphenoid bone is a butterfly-shaped bone at the base of the skull, located behind the nose and between the eyes. It helps form the eye sockets and contains two large air-filled spaces called sphenoid sinuses. In some cancers, especially in stage IVA, the cancer may spread to parts of the sphenoid bone, which can affect nearby areas like the eye or sinuses.

The sphenoid sinuses are two large, air-filled spaces located deep behind the nose, between the eyes, inside the sphenoid bone. They are part of the paranasal sinuses, which help keep the nose moist by producing mucus. Understanding the sphenoid sinuses is important in conditions like sinus infections and certain rare cancers that may affect this area.

A sphincter is a ring-shaped muscle that opens or closes a passage in the body by tightening or relaxing. Examples include the anal sphincter at the anus and the lower esophageal sphincter near the stomach. In cancer care, understanding sphincters helps explain symptoms and treatment plans, especially when tumors affect areas controlled by these muscles.

Other Herbs and Spices are plant-based seasonings sometimes discussed in cancer care for their potential to support symptom relief, nutrition, treatment tolerance, and overall quality of life. People may explore these natural substances as complementary approaches during or after cancer treatment. It’s important to talk with your healthcare team before using herbs or spices, especially during active treatment or if you have other health concerns.

A spiculated mass is a lump of tissue with spikes or points on its surface, often seen on mammograms. It can suggest certain types of breast changes, including invasive lobular carcinoma (ILC), a form of breast cancer. However, the term alone is not a diagnosis and should be discussed with your care team to understand what it means for you personally.

Spike Protein Detox, also called The Spike Cure Protocol, is a complementary approach sometimes discussed in cancer care. It is promoted as a way to address ongoing symptoms thought to be related to persistent spike protein from COVID-19 infection or vaccination. People may explore it for symptom relief, nutrition support, immune help, or quality of life during or after cancer treatment. Safety and coordination with your cancer care team are important.

Spike Protein Detox, also called The Spike Cure Protocol, is a complementary approach some people explore during or after cancer treatment. It is promoted as a way to address symptoms thought to be related to persistent spike protein from COVID-19 infection or vaccination. People may use it for symptom relief, nutrition support, immune help, or to improve quality of life. Safety and coordination with your cancer care team are important.

Spinal anesthesia, also called spinal block or subarachnoid block (SAB), is a type of regional anesthesia that temporarily numbs the lower part of the body. Special medicines are injected near the spinal cord to block pain while the patient stays awake. It’s often used during surgeries or procedures involving the abdomen, pelvis, or legs to manage pain safely and effectively.

A spinal block, also called spinal anesthesia or subarachnoid block (SAB), is a type of regional anesthesia that temporarily numbs the lower part of the body. It involves injecting medicine into the fluid around the spinal cord to block pain during surgery or procedures. Patients stay awake during the process. It’s important to understand how this term applies to your care by asking your healthcare team.

The spinal canal is a narrow, fluid-filled space inside the spine that holds and protects the spinal cord. It allows nerves to pass through and is important for nervous system function. In cancer care, fluid buildup in this space can cause pressure and symptoms, sometimes needing special procedures like lumbar punctures or shunts to manage.

The spinal column, also called the backbone or spine, is a strong, flexible column of bones and tissues that runs from the base of your skull to your tailbone. It protects the spinal cord, which carries messages between your brain and body, and supports your body’s weight, helping you stand and move. In cancer care, the spinal column may be involved if tumors or treatments affect the bones or nerves in this area.

The spinal cord is a long bundle of nerves running down the center of your back, protected by bones called vertebrae. It carries messages between your brain and body, helping control movement and sensation. Problems with the spinal cord can come from injuries, infections, tumors, or diseases, and may cause symptoms like pain, numbness, or weakness. Understanding the spinal cord’s role can help you talk with your care team about symptoms or treatments.

Spinal cord compression happens when pressure builds on the spinal cord, often from a tumor or injury. This pressure can cause pain, weakness, numbness, or problems controlling bladder and bowel. It is a serious condition that may need urgent treatment to prevent lasting damage. If you hear this term, ask your care team what it means for your situation.

A spinal tap, also called a lumbar puncture (LP), is a procedure where a thin needle is inserted into the lower spine to collect cerebrospinal fluid (CSF). This fluid surrounds the brain and spinal cord and is tested to check for infections, inflammation, or cancer cells. Spinal taps can also help measure pressure, deliver medicines like chemotherapy, or inject dye for imaging tests.

Spindle cell hemangioma is a benign (non-cancerous) tumor made up of blood vessels. It usually appears as painful red-brown or bluish lumps on or under the skin, often on the arms or legs. These tumors mostly occur in young adults but can sometimes be found in children. While they can bleed if they break open, spindle cell hemangiomas generally have an excellent outlook and are not cancer.

Spindle cell sarcoma is a rare type of cancer that starts in connective tissues like muscle, fat, or fibrous tissue. It is made up of spindle-shaped cells, which look long and slender under a microscope. This cancer usually affects adults and often begins as a small lump under the skin or in soft tissues.

A spindle cell tumor is a type of growth made up of spindle-shaped cells, which look long and slender under a microscope. These tumors can be either sarcomas or carcinomas and are among less common types of skin cancers. If you see this term in your medical records, it’s important to ask your care team what it means for your specific situation rather than assuming a diagnosis or treatment plan.

The spine, also called the backbone or spinal column, is a series of 26 bones called vertebrae that protect the spinal cord and support your body. It runs from the base of your skull to your tailbone. In cancer care, the spine may be mentioned when discussing tumors, injuries, or imaging tests. Understanding the term in context and asking your care team for details helps avoid confusion.

Spine cancer is cancer that starts in the spinal column (backbone) or spinal cord. The spine is made up of bones called vertebrae and contains nerve tissue. Many types of cancer can develop in the bones, tissues, fluid, or nerves of the spine. Understanding terms like the clivus, a bone at the base of the skull near the spine, can help patients follow medical information about spine cancers and ask informed questions.

A Spiral CT Scan, also called Helical Computed Tomography, is a special type of imaging test that uses an x-ray machine moving in a spiral path to take detailed pictures inside the body. It helps doctors find small abnormal areas and is often used to diagnose disease, plan treatment, or check how well treatment is working.

Spiritual Healing, also called Energy Healing, involves hands-on or near-body practices aimed at promoting balance, calm, and well-being. While some people use it alongside cancer treatment to help with emotional support or stress, scientific studies have not shown it improves quality of life or symptoms in cancer patients. It is considered a complementary approach without proven medical benefit for cancer itself.

Spiritual Healing or Energy Healing involves hands-on or near-body techniques aimed at promoting calm, balance, and well-being. Some people with cancer use it to help reduce stress or find emotional support during treatment. However, scientific studies have not shown that it improves cancer symptoms or quality of life. It is considered a complementary approach and should never replace standard cancer treatments.

Spirituality involves a person’s deep feelings and beliefs about life’s meaning, peace, and connection to others. In cancer care, spirituality may include religious beliefs, practices like prayer or meditation, and sources of strength. Health care teams may ask about spiritual needs to support patients emotionally and respect their values, especially when facing serious illness, end-of-life concerns, or treatment decisions.

Spit tobacco, also called chewing tobacco, is a smokeless tobacco product made from cured tobacco leaves. It is placed in the mouth, usually between the cheek and lower lip, and may be chewed or held in place. Spit tobacco contains nicotine and harmful chemicals that can cause addiction and increase the risk of cancers in the mouth, throat, esophagus, and pancreas, as well as other health problems.

The spleen is an organ located in the upper left side of the abdomen that helps filter blood, remove old blood cells, and support the immune system. In cancer care, the spleen may be involved if cancer spreads or affects blood and immune cells. Understanding the spleen’s role can help patients and caregivers ask informed questions about diagnosis, treatment, and monitoring.

A splenectomy is a surgical operation to remove the spleen, an organ that helps filter blood and fight infections. It may be done for reasons like injury, blood disorders, or cancer-related problems. Removing the spleen can affect the immune system, so patients often need vaccines and careful follow-up to reduce infection risks.

Splenic refers to anything related to the spleen, an organ in the upper left abdomen that helps filter blood, supports the immune system, and stores blood cells. In cancer care, splenic involvement or surgery may be important for diagnosis, managing symptoms, or treating complications, especially in blood cancers or tumors near the spleen.

Splenomegaly means an enlarged spleen. The spleen is an organ in the upper left part of the abdomen that helps filter blood and fight infections. When the spleen grows larger than normal, it can be a sign of various health conditions, including infections, blood disorders, or liver problems. If you hear this term, it’s important to ask your care team what it means for your specific health situation.

A spontaneous abortion, commonly called a miscarriage, is the natural loss of a pregnancy before the 20th week. It often happens early, sometimes before a person knows they are pregnant. Signs include vaginal bleeding, cramping, and passing tissue. Miscarriages usually occur due to genetic issues or health factors. The term spontaneous abortion is medical language for miscarriage but can cause confusion or distress.

Sporadic cancer is a type of cancer that happens in people without a family history or inherited genetic changes linked to that cancer. It means the cancer likely developed from factors other than inherited risk. If you hear this term, it’s important to ask your care team what it means for your specific situation rather than assuming it guides treatment or diagnosis alone.

Spotted thistle, also known as blessed thistle, cardin, holy thistle, or St. Benedict’s thistle, is a plant whose leaves, stems, and flowers have been used in some cultures to help with certain health issues. It may have anti-inflammatory and anticancer effects, but these are not proven or part of standard cancer treatment. Always talk with your healthcare team before using herbal products.

Sprout-Based Diets are nutrition plans that include sprouts and are discussed in cancer care for their potential effects on nutrition, metabolism, inflammation, digestion, immune health, and treatment tolerance. While some sources suggest benefits, these diets should be considered carefully with your healthcare team to understand how they fit your individual cancer care and treatment plan.

Sprycel, also known as dasatinib or BMS-354825, is a targeted cancer medicine used to treat certain types of leukemia in adults and children aged 1 year and older. It works by blocking proteins that help cancer cells grow, especially in leukemias with a genetic change called the Philadelphia chromosome. Sprycel may be used alone or with other drugs as part of treatment.

Sputum is mucus and other material that you cough up from your lungs. Doctors may test sputum to check for infections or lung problems, including cancer. It’s important to understand sputum in context and ask your care team what it means for you, rather than assuming it is a diagnosis or treatment by itself.

Sputum cytology is a test that looks at mucus and cells coughed up from the lungs under a microscope. It helps check for abnormal cells, including lung cancer cells. This test is one tool doctors use to understand lung health and guide diagnosis. If you hear this term, ask your care team how it relates to your specific situation rather than assuming it means a diagnosis or treatment plan.

Squalamine Lactate is a drug that helps stop the growth of new blood vessels into solid tumors. It belongs to a group of medicines called angiogenesis inhibitors. This means it may help slow or stop tumor growth by cutting off the tumor’s blood supply. Patients should discuss with their care team how this drug might relate to their specific treatment.

The squamocolumnar junction, also called the transformation zone, is the area in the cervix where two types of cells meet: thin, flat squamous cells on the outside and taller, mucus-producing columnar cells on the inside. This area is important because most abnormal cell changes and cervical cancers begin here. Screening tests like Pap smears focus on this zone to detect early changes.

Squamous cell refers to a type of flat cell found on the surface of the skin and lining of some organs. Squamous cell carcinoma (SCC) is a group of cancers that start in these cells and can appear in many parts of the body, such as the skin, mouth, throat, esophagus, and more. Symptoms, outlook, and treatment can vary widely depending on where the cancer develops. It’s important to understand the term in the context of your own diagnosis and.

Squamous cell carcinoma (SCC), also called epidermoid carcinoma, is a type of cancer that starts in squamous cells. These flat, thin cells make up the surface of the skin and line many organs and body passages. SCC can occur in various places like the skin, mouth, throat, cervix, and more. It may look different depending on where it starts and how it behaves. A biopsy is usually needed to confirm the diagnosis.

Squamous Cell Carcinoma In Situ, also called stage 0 squamous cell carcinoma, is an early condition where abnormal cells are found only in the surface layers of the skin or lining of certain organs. These cells have not spread into deeper tissues. It may appear on the skin, mouth, or other body areas. Early detection allows for treatment or close monitoring to prevent progression to invasive cancer.

Squamous cell carcinoma of the head and neck is a type of cancer that starts in thin, flat cells called squamous cells. These cells line the surface of the skin and the inside of the mouth, throat, nose, and voice box. This cancer can affect areas like the lips, sinuses, salivary glands, and throat. It often requires treatments such as surgery, chemotherapy, radiation, or newer immunotherapy drugs when it spreads or returns after initial treatment.

Squamous cell carcinoma of the skin is a common type of skin cancer that starts in the outer layer of the skin. It often appears as a red bump, scaly patch, open sore, or wart that may crust or bleed. It usually develops on sun-exposed areas like the face, ears, or hands. When found early and hasn’t spread, it can often be cured with surgery or radiation.

Squamous cell skin cancer is a type of cancer that starts in the outer layer of the skin. It often appears on sun-exposed areas like the face, ears, and hands. It may look like a firm red bump, scaly patch, open sore, or wart that can bleed or crust. When found early and hasn’t spread, it can usually be cured. People with certain genetic conditions, like Bloom syndrome or fragile skin from COL17A1 gene changes, may have a higher risk.

A squamous intraepithelial lesion (SIL) is an abnormal growth of squamous cells, often found on the cervix or other lower genital areas. These changes are usually caused by infection with high-risk human papillomavirus (HPV). SILs can be low grade or high grade, indicating mild or more serious cell changes. Detecting SILs early through Pap tests and HPV testing helps guide follow-up and treatment to prevent progression to cancer.

SR-29142 is a drug that may help protect healthy tissues from the harmful effects of cancer treatments like chemotherapy. It is not a cancer treatment itself but might be used alongside anticancer drugs to reduce side effects. If you see this term, it’s important to discuss with your care team how it relates to your specific situation rather than assuming it is a treatment plan or diagnosis.

SR-45023A is a type of anticancer drug known as a bisphosphonate. It works by affecting certain receptors on cancer cells that control their growth and death. If you come across this term in your care, it’s important to discuss with your healthcare team what it means for your specific situation rather than assuming it is a diagnosis or treatment plan on its own.

SR49059 is a substance being studied for cancer treatment. It works by blocking a hormone-related growth factor that can cause some cancer cells to multiply. If you see this term, it’s important to talk with your care team about what it means for your specific situation rather than assuming it is a diagnosis or treatment plan.

SRS, also called an Octreotide Scan or Somatostatin Receptor Scintigraphy, is a special imaging test that uses a small amount of radioactive medicine to find certain tumors, especially neuroendocrine tumors like carcinoid tumors. It helps doctors see where tumor cells with somatostatin receptors are in the body. Patients should ask their care team how this test relates to their specific situation.

Sodium stibogluconate (SSG) is a medicine mainly used to treat leishmaniasis, a parasitic infection. It is being studied for possible use in cancer care because it may block enzymes that help some cancers grow. SSG is given by slow injection into a vein and can cause side effects like nausea, tiredness, and joint pain. If you see this term, ask your care team how it relates to your care.

SSRIs, or selective serotonin reuptake inhibitors, are medicines commonly used to treat depression and anxiety. They work by increasing serotonin, a brain chemical that helps regulate mood. In cancer care, SSRIs may be prescribed to help manage emotional challenges like sadness or anxiety during or after treatment. It may also appear under related names such as Selective Serotonin Reuptake Inhibitor.

St. Benedict's Thistle, also known as blessed thistle, cardin, holy thistle, or spotted thistle, is a plant used in some cultures for health purposes. Its leaves, stems, and flowers have been studied for possible anti-inflammatory and anticancer effects. If you see this term in your care, ask your healthcare team how it relates to your situation rather than assuming it is a treatment or diagnosis.

St. John’s wort (Hypericum perforatum) is a common flowering plant used as an herbal supplement, often for mild to moderate depression. It is sold over-the-counter and studied for possible effects on cancer treatment side effects. However, it can interact with many medications, including cancer drugs, so patients should discuss its use with their healthcare team.

ST1481, also called Gimatecan, is a drug being studied for cancer treatment. It belongs to a group called topoisomerase inhibitors, which work by interfering with cancer cell growth. It has been used in some countries for gastrointestinal tumors but is not yet a standard treatment everywhere. Patients should ask their care team how this term relates to their specific situation.

Stable disease means that cancer or a tumor has not grown or shrunk significantly after treatment. It is a way doctors describe when the cancer stays about the same size or severity over time. This can be an important sign that the disease is not getting worse, even if it is not shrinking.

Stage describes how much cancer is in the body, including the size of the tumor and whether it has spread. Knowing the stage helps doctors understand how serious the cancer is, plan the best treatment, and find clinical trials that might be options. The stage given at diagnosis stays the reference point, even if the cancer changes later.

Stage 0 Anal HSIL means abnormal cells are found in the innermost layer of the anus. These cells are not yet cancer but could become cancer if untreated. It is also called high-grade squamous intraepithelial lesion (HSIL). Understanding this stage helps guide monitoring and possible treatment to prevent progression to anal cancer.

Stage 0 bladder cancer is an early form of bladder cancer where abnormal cells are found only in the inner lining of the bladder and have not spread into deeper bladder layers. It includes two types: stage 0a, which may look like small finger-like growths, and stage 0is, a flat tumor called carcinoma in situ. Knowing the stage helps guide treatment decisions, but it’s important to discuss what this means for each person with the care team.

Stage 0 breast carcinoma in situ is a condition where abnormal cells are found in the breast but have not spread beyond their original location. It includes two types: ductal carcinoma in situ (DCIS), where cells are inside the milk ducts, and Paget disease of the nipple, affecting the nipple skin. This early stage is not invasive but may increase the risk of developing invasive breast cancer if untreated.

Stage 0 Chronic Lymphocytic Leukemia (CLL) is an early form of blood cancer where there are too many lymphocytes (a type of white blood cell) in the blood, but no other signs or symptoms of leukemia. It usually grows slowly and may not cause problems right away. Doctors use this stage to help guide monitoring and treatment decisions.

Stage 0 colorectal carcinoma in situ means abnormal cells are found only in the innermost lining of the colon or rectum. These cells have the potential to become cancer and spread but have not yet done so. It is an early, very localized condition that doctors carefully evaluate to decide the best care approach. Patients should discuss what this stage means for their individual situation with their healthcare team.

Stage 0 disease, also called carcinoma in situ, is an early condition where abnormal cells that look like cancer are found only in the place they first formed and have not spread to nearby tissues. While not invasive cancer yet, these cells may develop into cancer if untreated. Doctors often recommend treatment or close monitoring to prevent progression.

Stage 0 Distal Bile Duct Cancer, also called carcinoma in situ, means abnormal cells are found only in the innermost lining of the distal bile duct. These cells are not yet invasive cancer but could become cancer over time. It is important for patients and caregivers to understand this term in context and discuss with their care team what it means for their individual situation.

Stage 0 esophageal carcinoma in situ means that abnormal cancer cells are found only in the innermost lining of the esophagus. This early stage is sometimes called high-grade dysplasia. It has not spread deeper into the esophagus wall or to other parts of the body. Understanding this stage helps guide treatment and monitoring decisions.

Stage 0 gallbladder carcinoma in situ means abnormal cells are found only in the innermost layer of the gallbladder wall. These cells have the potential to become cancer but have not spread deeper or to other parts of the body. This early stage is sometimes found during tests or surgery for other gallbladder issues. Treatment and outlook depend on whether the abnormal cells can be fully removed and the patient’s overall health.

Stage 0 Gastric Cancer, also called carcinoma in situ, means abnormal cells are found only in the innermost layer of the stomach lining. These cells are not yet invasive cancer but could become cancer if untreated. This early stage is important to understand in the context of diagnosis and treatment planning. Patients should discuss what this means for their care with their medical team.

Stage 0 HPV-negative oropharyngeal carcinoma in situ means abnormal cells are found in the lining of the throat (oropharynx) that could become cancer but have not spread. This early stage is not linked to HPV infection. Diagnosis involves exams of the mouth and throat. Treatment and outlook depend on many factors, including cancer stage, overall health, and whether HPV is involved.

Stage 0 Hypopharyngeal Carcinoma In Situ means abnormal cells are found only in the lining of the hypopharynx, the lower part of the throat. These cells have not spread deeper or to other areas. This early stage is often found before symptoms appear. Understanding this term helps patients and caregivers discuss diagnosis and treatment options with their care team.

Stage 0 intrahepatic bile duct cancer, also called carcinoma in situ, means abnormal cells are found only in the innermost lining of the bile ducts inside the liver. These cells are not yet invasive cancer but could become cancer over time. Understanding this stage helps patients and caregivers discuss diagnosis and treatment options with their care team in context.

Stage 0 laryngeal carcinoma in situ means abnormal cells are found only in the lining of the larynx (voice box). These cells have not spread deeper or to other parts of the body. It is an early form of laryngeal cancer that may need treatment to prevent progression. Regular follow-up is important to watch for any changes or recurrence.

Stage 0 lip and oral cavity carcinoma in situ means abnormal cells are found only in the lining of the lips or mouth. These cells have not yet spread deeper or to other tissues. This early stage is important to understand in context with your care team, as it guides diagnosis and treatment decisions.

Stage 0 Maxillary Sinus Carcinoma In Situ means abnormal cells are found in the lining of the maxillary sinus, a hollow space in the cheekbone near the nose. These cells have the potential to become cancer but have not yet spread. Treatment and outlook depend on factors like tumor size, location, cancer type, and overall health. Options may include surgery, radiation, or chemotherapy.

Stage 0 melanoma, also called melanoma in situ, is the earliest form of skin cancer. It means abnormal pigment-producing cells called melanocytes are found only in the top layer of the skin and have not spread deeper. Early detection and treatment usually lead to very good outcomes. It may also appear under related names such as Melanoma In Situ.

Stage 0 Merkel Cell Carcinoma In Situ means abnormal Merkel cells are found only in the top layer of the skin. These cells have the potential to become cancer and spread but have not yet grown into deeper skin layers or other tissues. This early stage is important to understand in context with your overall diagnosis and treatment plan.

Stage 0 Nasal Cavity and Ethmoid Sinus Carcinoma In Situ means abnormal cells are found in the lining of the nasal cavity or ethmoid sinus. These cells are not yet invasive cancer but could become cancer over time. If you hear this term, it’s important to talk with your care team about what it means for your specific situation and what tests or treatments might be needed.

Stage 0 nasopharyngeal carcinoma in situ means abnormal cells are found only in the lining of the nasopharynx, the upper part of the throat behind the nose. These cells have not yet spread into nearby tissues. This early stage may cause symptoms like trouble breathing, hearing, or speaking. Diagnosis involves tests of the nose and throat, and treatment options depend on the extent of abnormal cells and other factors.

Stage 0 non-small cell lung carcinoma in situ is an early form of lung cancer where abnormal cells are found only in the lining of the airways. It includes types called adenocarcinoma in situ and squamous cell carcinoma in situ. This stage means the cancer cells have not spread beyond the surface layer. If you see this term, it’s important to discuss with your care team what it means for your specific situation.

Stage 0 Nonmelanoma Skin Carcinoma In Situ On The Eyelid is an early form of skin cancer where abnormal cells are found only in the top layer of skin on the eyelid. These cells have not spread deeper or to other areas. It includes basal cell or squamous cell types and usually requires treatment to prevent progression while preserving eyelid function.

Stage 0 Nonmelanoma Skin Carcinoma In Situ on the Head and Neck (Not on the Eyelid) is an early form of skin cancer where abnormal cells are found only in the top layer of the skin in areas like the face and neck, excluding the eyelids. These cells have not spread deeper or to other parts of the body. This stage is sometimes called carcinoma in situ and is important to identify for early treatment.

Stage 0 pancreatic carcinoma in situ means abnormal cells are found in the lining of the pancreas. These cells are not yet invasive cancer but could become cancer and spread if untreated. Early pancreatic cancer often has no symptoms and is hard to detect because the pancreas is deep inside the body and signs can be like other illnesses.

Stage 0 Penile Carcinoma In Situ is an early form of penile cancer where abnormal cells are found only on the surface of the skin of the penis. It includes two subtypes: 0is, where abnormal cells may become cancer, and 0a, where non-spreading squamous cell cancer is present. Understanding this stage helps guide treatment decisions and follow-up care.

Stage 0 perihilar bile duct cancer, also called carcinoma in situ or high-grade dysplasia, means abnormal cells are found only in the innermost lining of the perihilar bile duct. These cells are not yet invasive cancer but could become cancer over time. Understanding this stage helps patients and caregivers discuss diagnosis and treatment options with their care team in context.

Stage 0 salivary gland carcinoma in situ means abnormal cells are found only in the lining of the salivary gland ducts or small sacs. These cells have not yet spread into nearby tissues. This early stage is sometimes called carcinoma in situ. Understanding this term is important, but it should be discussed with your care team to know what it means for your specific situation.

Stage 0 Squamous Cell Carcinoma, also called Squamous Cell Carcinoma In Situ, is an early condition where abnormal cells are found only in the surface layer of the skin or lining of certain organs. These cells have not spread into deeper tissues. Early detection allows for treatment or close monitoring to prevent progression to invasive cancer. It may appear on the skin, mouth, or other body areas.

Stage 0 Stomach Cancer, also called carcinoma in situ, means abnormal cells are found only in the innermost layer of the stomach lining. These cells are not yet invasive cancer but could become cancer if untreated. Understanding this early stage helps patients and caregivers discuss diagnosis and treatment options with their care team.

Stage 0 Testicular Carcinoma In Situ is an early condition where abnormal cells are found in the tiny tubules of the testicles where sperm normally develop. It is also called Testicular Intraepithelial Neoplasia or Testicular Intratubular Germ Cell Neoplasia. These abnormal cells are not yet invasive cancer but may become cancer over time. Tumor marker blood tests are usually normal at this stage.

Stage 0 Transitional Cell Carcinoma In Situ of the Renal Pelvis and Ureter is an early form of cancer where abnormal cells are found only on the surface lining of the kidney’s urine-collecting area or the tube connecting the kidney to the bladder. It often has no symptoms and can be treated successfully if found early. Treatment depends on tumor details and kidney health.

Stage 1 neuroblastoma is an early form of neuroblastoma cancer where the tumor is found in only one area and can be completely removed by surgery. It usually affects young children and may be linked to certain genetic factors. Understanding the stage helps doctors decide the best treatment and follow-up care for your child.

Stage 2 neuroblastoma is a type of cancer found in one area of the body, usually in young children. It is divided into stages 2A and 2B, depending on whether all visible cancer can be removed by surgery and if nearby lymph nodes contain cancer cells. Understanding this stage helps guide treatment decisions and discussions with your child’s care team.

Stage 3 neuroblastoma is a type of cancer in children where the tumor has spread beyond its original location and cannot be completely removed by surgery. It may involve lymph nodes on both sides of the body or be located in the middle of the body affecting tissues on both sides. Understanding this stage helps guide treatment decisions and discussions with your child’s care team.

Stage 4 neuroblastoma is a type of cancer in children where the tumor has spread to distant parts of the body, such as lymph nodes or bones. A special form called stage 4S affects infants under 12 months and involves limited spread to the skin, liver, or bone marrow. Understanding the stage helps doctors plan treatment and care tailored to each child’s situation.

Stage A esthesioneuroblastoma means the cancer is found only in the nasal cavity, the space inside the nose. This is an early stage of this rare cancer that starts in the nerve cells responsible for the sense of smell. Knowing the stage helps doctors plan the best treatment and care for your child.

Stage B esthesioneuroblastoma is a type of cancer that has spread from the nasal cavity into the nasal sinuses. It is a rare cancer that starts in the nerve cells responsible for the sense of smell. Knowing this stage helps doctors plan the best treatment for children and teens affected by this disease.

Stage C esthesioneuroblastoma means the cancer has spread from the nasal cavity into the nearby nasal sinuses and surrounding tissues. This stage helps doctors understand how far the cancer has grown to plan the best treatment. Esthesioneuroblastoma is a rare cancer that starts in the nerve cells responsible for the sense of smell, mostly affecting children and adults.

Stage D esthesioneuroblastoma means the cancer has spread from the nose to distant parts of the body, such as lymph nodes in the neck or organs like the brain, bone, liver, or lungs. This stage shows that the cancer is more advanced and may require different treatment approaches. Knowing the stage helps doctors plan the best care for your child.

Stage I Adenosarcoma of the Uterus is an early stage of a rare cancer that starts in the uterus’s muscle or supporting tissues. At this stage, the tumor is found only inside the uterus, either in the inner lining or spreading partway into the muscular wall. Treatment and outlook depend on the tumor’s size, exact location, and the patient’s overall health. It’s important to discuss what this stage means for you with your care team.

Stage I adrenocortical cancer means a tumor 5 centimeters or smaller that is found only in the adrenal gland. This early stage indicates the cancer has not spread beyond the adrenal gland. Understanding the stage helps guide treatment decisions and follow-up care. Patients should discuss what this stage means for their individual situation with their healthcare team.

Stage I Adult Hodgkin Lymphoma means cancer is found in one group of lymph nodes or a single nearby area in the lymph system. Symptoms may include swollen lymph nodes, fever, night sweats, weight loss, and fatigue. Diagnosis and staging use tests to examine the lymph system and other parts of the body. Treatment and outlook depend on specific factors and the exact stage.

Stage I Adult Non-Hodgkin Lymphoma means cancer is found in one group of lymph nodes or a single nearby area in the lymph system. It is an early stage of this type of lymphoma, which is a cancer of the immune system. Understanding this stage helps guide treatment decisions and discussions with your care team about what it means for you personally.

Stage I Adult Soft Tissue Sarcoma of the Retroperitoneum is an early stage cancer where malignant cells form in the soft tissues located in the retroperitoneum, the area behind the abdominal organs. This stage is divided by tumor size and grade, with tumors being low grade or unknown grade and either 5 centimeters or smaller (stage IA) or larger than 5 centimeters (stage IB). Treatment and outlook depend on these factors and where the tumor is in the body.

Stage I adult soft tissue sarcoma of the trunk, arms, and legs is an early form of cancer that starts in the soft tissues like muscles, fat, or blood vessels in these body areas. At this stage, the tumor is low grade or its grade is unknown, and it may be 5 centimeters or smaller (stage IA) or larger than 5 centimeters (stage IB). Treatment and outlook depend on tumor size, grade, and location.

Stage I AIDS-Related Lymphoma means cancer cells are found in one group of lymph nodes or one area outside the lymph system in a person with AIDS. It is an early stage of lymphoma linked to a weakened immune system caused by HIV infection. Understanding this stage helps guide treatment and care decisions.

Stage I anal cancer means the tumor is 2 centimeters (about ¾ inch) or smaller and has not spread to lymph nodes or other parts of the body. Knowing the stage helps doctors plan the best treatment. If you hear this term, it’s important to ask your care team how it applies to your specific situation rather than assuming it tells the whole story.

Stage I bladder cancer means the cancer has grown into the connective tissue beneath the bladder lining but has not reached the muscle layer. It is often called non-muscle-invasive bladder cancer. Understanding the stage helps guide treatment decisions and follow-up care. Patients should discuss what this stage means for their individual situation with their healthcare team.

Stage I cervical cancer means the cancer is found only in the cervix and has not spread to other parts of the body. It is divided into smaller groups based on tumor size and how deeply the cancer has grown into cervical tissue. Understanding this stage helps doctors plan the best treatment.

Stage I Childhood Hodgkin Lymphoma means cancer is found in one group of lymph nodes or nearby lymph tissue in a child. It is an early stage of Hodgkin lymphoma, a cancer of the lymph system. Diagnosis and staging use tests to see where the cancer is. Treatment often includes chemotherapy and/or radiation. Understanding this term helps families ask the care team how it applies to their child’s situation.

Stage I Childhood Non-Hodgkin Lymphoma means cancer is found in one group of lymph nodes or one area outside the lymph nodes, but not in the abdomen or chest area between the lungs. It is a type of cancer that starts in the lymph system, part of the body’s immune system. Understanding this stage helps guide treatment and care decisions.

Stage I Chronic Lymphocytic Leukemia (CLL) means there are too many lymphocytes (a type of white blood cell) in the blood and the lymph nodes are larger than normal. This stage helps doctors understand how far the leukemia has spread and guides treatment decisions. CLL often grows slowly and may not cause symptoms at first.

Stage I colorectal cancer, also called Dukes A colorectal cancer, means the cancer has grown into the inner layers of the colon or rectum wall but has not spread beyond the muscle layer. It is an early stage of colorectal cancer. Understanding this term helps patients and caregivers discuss diagnosis and treatment options with their care team.

Stage I distal bile duct cancer means that cancer cells have grown into the wall of the distal bile duct but have spread less than 5 millimeters deep. This early stage cancer is found in the part of the bile duct near where it joins the small intestine. Understanding this stage helps doctors plan treatment and predict outcomes. Patients should discuss what this stage means for their care with their medical team.

Stage I endometrial cancer means cancer is found only in the uterus. It is divided into stage IA, where cancer is limited to the inner lining or less than halfway into the muscle layer of the uterus, and stage IB, where cancer has grown halfway or more into the muscle layer. Treatment often involves surgery, and sometimes radiation, chemotherapy, or hormone therapy may be needed.

Stage I Endometrial Stromal Sarcoma (ESS) is a rare type of uterine cancer where the tumor is found only inside the uterus. In this stage, the tumor is limited to the uterus and is further divided by size: stage IA tumors are 5 centimeters or smaller, while stage IB tumors are larger than 5 centimeters. Understanding this term helps patients and caregivers discuss diagnosis and treatment options with their care team.

Stage I esophageal adenocarcinoma is an early form of cancer in the esophagus where cancer cells have grown into the inner layers of the esophagus wall but have not spread to lymph nodes or distant sites. It is divided into subgroups based on how deeply the cancer has grown and how the cells look under a microscope. Understanding this stage helps guide treatment decisions and discussions with your care team.

Stage I esophageal squamous cell carcinoma is an early form of cancer in the esophagus where cancer cells have spread into the inner layers of the esophagus wall. It is divided into stages IA and IB based on how far the cancer has grown into the esophagus layers. Understanding this stage helps guide treatment decisions and care planning.

Stage I gallbladder cancer means cancer cells have formed in the innermost layer of the gallbladder wall and may have spread to the muscle layer. It is an early stage where the cancer is still localized. Treatment and outlook depend on whether the cancer can be fully removed by surgery, the cancer type, and the patient’s overall health.

Stage I Gastric Cancer, also called Stage I Stomach Cancer, is an early stage of stomach cancer where the tumor is limited to the inner layers of the stomach wall and may have spread to a small number of nearby lymph nodes. Understanding this stage helps doctors decide the best treatment plan. If you see this term in your medical report, ask your care team what it means for your specific situation.

Stage I Gestational Trophoblastic Neoplasia (GTN) means the tumor is found only inside the uterus. GTN is a rare type of disease where abnormal cells grow from tissue formed after pregnancy. Treatment depends on the type of GTN, how far it has spread, and other factors. Stage I indicates the earliest stage, with no spread beyond the uterus.

Stage I HPV-negative oropharyngeal cancer is an early form of cancer found in the middle part of the throat, where the tumor is 2 centimeters or smaller and not linked to HPV infection. Diagnosis involves exams of the mouth and throat. Treatment and outlook depend on factors like cancer stage, overall health, and smoking history. Patients are encouraged to discuss what this diagnosis means for their care with their medical team.

Stage I HPV-positive oropharyngeal cancer is an early form of throat cancer linked to human papillomavirus (HPV) infection. It involves a small tumor in the oropharynx (throat area) or cancer found in lymph nodes on one side of the neck. This type of cancer often has a better outlook and different treatment options compared to HPV-negative cases. Diagnosis and treatment depend on tumor size, lymph node involvement, and overall health.

Stage I hypopharyngeal cancer means a small tumor, 2 centimeters or less, found in one area of the hypopharynx, the lower part of the throat. This cancer is often found late because early symptoms are rare. Treatment and outlook depend on many factors, including overall health and whether the patient smokes during therapy. It’s important to discuss what this stage means for each person with their care team.

Stage I intrahepatic bile duct cancer means cancer has formed inside the bile ducts within the liver. It is divided into two parts: stage IA, where the tumor is 5 centimeters or smaller, and stage IB, where the tumor is larger than 5 centimeters. Understanding this stage helps guide treatment decisions, but it’s important to discuss what it means for each person with the healthcare team.

Stage I intraocular melanoma of the ciliary body and choroid is an early form of eye cancer where the tumor is small and located only in the choroid, a layer of blood vessels in the eye. This rare cancer starts in cells that produce pigment and can affect vision. Early diagnosis and treatment are important to manage the disease and reduce the risk of spread.

Stage I kidney cancer, also called stage I renal cell cancer, means the tumor is 7 centimeters or smaller and is found only in the kidney. It is an early stage of renal cell cancer, the most common type of kidney cancer in adults. Understanding this stage helps guide treatment and follow-up care.

Stage I laryngeal cancer means cancer is found in one area of the larynx (voice box) where the vocal cords still work normally. It is an early stage of cancer that has not spread beyond the larynx. Diagnosis and treatment depend on tests of the throat and neck. Treatment aims to remove or control the cancer while preserving the ability to speak, eat, and breathe as normally as possible.

Stage I leiomyosarcoma of the uterus is a rare cancer found only in the uterus. It starts in the muscles or supporting tissues of the uterus. At this early stage, the tumor is limited to the uterus and is classified by size. Treatment and outlook depend on tumor size, overall health, and whether the cancer is new or has returned. Understanding this term helps patients discuss their care with their medical team.

Stage I lip and oral cavity cancer means a small tumor, 2 centimeters or less, that has not deeply invaded tissues. Treatment often includes surgery, radiation, or both, depending on tumor location and size. Patients with this cancer have a higher risk of developing a second head or neck cancer. Quitting smoking before radiation can improve recovery chances.

Stage I Malignant Pleural Mesothelioma means the cancer is found only on one side of the chest, mainly in the lining of the chest wall and nearby tissues. Knowing the stage helps doctors plan treatment. It is important to discuss with your care team what this stage means for your specific case rather than relying on the term alone.

Stage I maxillary sinus cancer is an early form of cancer that starts in the lining of the maxillary sinus, a hollow space in the cheekbone near the nose. Treatment and outlook depend on the tumor’s size, location, and whether it has spread, as well as the patient’s overall health. Common treatments include surgery, radiation, and chemotherapy.

Stage I medullary thyroid cancer means a small tumor (2 centimeters or smaller) is found only in the thyroid gland. This type of cancer starts in special cells called C cells in the thyroid. Because medullary thyroid cancer can sometimes run in families, doctors may suggest testing close relatives to see if they are at risk. Understanding the stage helps guide treatment and follow-up care.

Stage I melanoma is an early form of skin cancer where the tumor is small and has not spread deeply or to other parts of the body. It is divided into stages IA and IB based on tumor thickness and skin ulceration. Understanding this stage helps guide treatment and follow-up care, but it’s important to discuss what it means for each individual with your healthcare team.

Stage I Merkel Cell Carcinoma means the cancer tumor is 2 centimeters (about ¾ inch) or smaller. It is an early stage of this rare skin cancer that usually appears as a painless lump on sun-exposed skin. Understanding the stage helps your care team plan treatment and follow-up. Always ask your doctor how this stage applies to your specific situation.

Stage I multiple myeloma is an early form of a cancer that affects plasma cells, a type of white blood cell found in the bone marrow. At this stage, relatively few cancer cells have spread, and there may be no symptoms. Diagnosis involves blood, bone marrow, and urine tests. Treatment options vary and depend on individual factors.

Stage I Mycosis Fungoides is an early form of a rare skin lymphoma where cancerous T-cells affect the skin, causing red patches or plaques. It is divided into IA and IB based on how much skin is involved. Treatments include skin-directed therapies like topical chemotherapy. Understanding this stage helps guide care and treatment decisions.

Stage I Nasal Cavity and Ethmoid Sinus Cancer means cancer is found in only one area of the nasal cavity or ethmoid sinus and may have spread into nearby bone. This early stage cancer may be treated with surgery, radiation, or chemotherapy. If you or a loved one has this diagnosis, it’s important to talk with your doctor about what tests and treatments are best for your situation.

Stage I nasopharyngeal cancer means cancer is found only in the nasopharynx or has spread slightly to nearby areas like the oropharynx or nasal cavity. Early signs may include a lump in the neck, ear pain or ringing, trouble hearing, sore throat, stuffy nose, or nosebleeds. Tests of the nose and throat help diagnose and stage the cancer. Treatment and outlook depend on tumor size and other factors.

Stage I nonmelanoma skin cancer on the eyelid refers to early basal cell or squamous cell skin cancers located on the eyelid. Treatment depends on the cancer type, tumor size, location, and overall health. Stage I is divided into IA (tumor 10 mm or smaller) and IB (tumor larger than 10 mm but not over 20 mm). Understanding this term helps patients discuss diagnosis and treatment options with their care team.

Stage I nonmelanoma skin cancer on the head and neck (not on the eyelid) means a small skin cancer tumor, 2 centimeters or less, located on the head or neck but not on the eyelid. This includes basal cell carcinoma and squamous cell carcinoma, the most common skin cancers. Treatment and outlook depend on the cancer type, tumor size, location, and overall health.

Stage I Ovarian Borderline Tumor is an early-stage growth found in one or both ovaries or fallopian tubes. It involves abnormal cells that are not clearly cancer but may become cancerous. Symptoms can include abdominal pain or swelling. Diagnosis and staging use tests like pelvic exams and ultrasounds. Treatment and outlook depend on tumor size, exact location, and overall health. This tumor is also called Stage I Ovarian Low Malignant Potential Tumor.

Stage I ovarian epithelial and fallopian tube cancer means cancer cells are found only inside one or both ovaries or fallopian tubes. This early stage is divided into parts based on how much the cancer has spread within these organs. Diagnosis and treatment depend on careful tests and exams. If you see this term, it’s important to talk with your care team about what it means for your specific situation.

Stage I ovarian germ cell tumor means cancer is found only inside one or both ovaries or fallopian tubes. In stage IA, the cancer is inside a single ovary or fallopian tube. This early stage is important to understand in context with your personal diagnosis and treatment plan. Ask your care team how this stage applies to you.

Stage I Ovarian Low Malignant Potential Tumor, also called Stage I Ovarian Borderline Tumor, is an early growth found in one or both ovaries or fallopian tubes. It involves abnormal cells that are not clearly cancer but may become cancerous. Symptoms can include abdominal pain or swelling. Diagnosis uses exams and imaging. Treatment and outlook depend on tumor size, location, and overall health.

Stage I pancreatic cancer means the cancer is found only in the pancreas and has not spread to nearby tissues or lymph nodes. It is divided into two parts based on tumor size: stage IA tumors are 2 centimeters or smaller, and stage IB tumors are larger than 2 centimeters but not larger than 4 centimeters. Early pancreatic cancer often has no symptoms, making it hard to detect.

Stage I Papillary and Follicular Thyroid Cancer (55 Years and Older) means cancer is found only in the thyroid gland and the tumor is 4 centimeters or smaller. This type of thyroid cancer usually grows slowly and can often be treated successfully. If you see this term, it’s important to talk with your care team about what it means for your specific situation rather than relying on the term alone.

Stage I papillary and follicular thyroid cancer in people younger than 55 means the cancer is limited to the thyroid or nearby tissues and lymph nodes but has not spread to distant parts of the body. These types of thyroid cancer are usually well-differentiated, meaning they tend to grow slowly and can often be treated successfully. Understanding this stage helps guide treatment and follow-up care.

Stage I penile cancer means the cancer has grown into tissue just under the skin of the penis but has not spread to lymph nodes or other parts of the body. It is an early stage that helps doctors plan treatment. If you hear this term, ask your care team how it applies to your specific situation.

Stage I perihilar bile duct cancer means that cancer cells have formed in the innermost lining of the perihilar bile duct and have spread into the muscle or fibrous tissue layers of the duct wall. This early stage helps doctors understand how far the cancer has grown and guides treatment decisions. Patients should discuss what this stage means for their individual care with their medical team.

Stage I prostate cancer means the cancer is found only in the prostate and is usually small and slow growing. It may not cause symptoms and is often found through tests like a PSA blood test or biopsy. The cancer is low grade, with a PSA level under 10 and a Gleason score of 6 or less. Treatment options vary and may include active surveillance or other therapies based on individual health and preferences.

Stage I renal cell cancer, also called stage I kidney cancer, means the tumor is 7 centimeters or smaller and is found only in the kidney. It is an early stage of renal cell cancer, the most common type of kidney cancer in adults. Understanding this stage helps guide treatment and follow-up care.

Stage I salivary gland cancer means the cancer is small (2 centimeters or less) and only in the salivary gland. Treatment and outlook depend on the tumor size, the type of salivary gland affected, the cancer cell type, and the patient’s overall health. It’s important to discuss what this stage means for each person with the care team.

Stage I Stomach Cancer, also called Stage I Gastric Cancer, is an early stage of stomach cancer where the tumor is mostly limited to the inner layers of the stomach wall. It may have spread slightly into nearby tissues or to one or two nearby lymph nodes. Understanding this stage helps guide treatment decisions and what to expect next.

Stage I testicular cancer means the cancer is found only in the testicle and has not spread to other parts of the body. Doctors use blood tests for tumor markers like AFP, beta-hCG, and LDH, along with imaging and surgery results, to determine this stage. Understanding the stage helps guide treatment and follow-up plans.

Stage I thymoma is a rare type of cancer found only inside the thymus gland, a small organ in the upper chest. At this stage, the cancer cells are contained within the thymus and have not spread outside its capsule. Treatment often involves surgery to remove the tumor, sometimes followed by radiation to kill any remaining cancer cells. Understanding this stage helps guide treatment and follow-up care.

Stage I transitional cell cancer of the renal pelvis and ureter is an early form of cancer that starts in the lining cells of the kidney’s urine-collecting area or the tubes connecting the kidney to the bladder. It can often be cured if found early. Treatment depends on the tumor’s stage and grade, the health of the other kidney, and whether the cancer has returned.

Stage I vaginal cancer means cancer cells are found only in the vaginal wall. Treatment choices depend on factors like the cancer’s size, type of cells involved, whether the patient has a uterus, and any past radiation to the pelvis. Common treatments include surgery, topical chemotherapy, and radiation therapy. Symptoms may include pain or unusual vaginal bleeding, but early cancer often has no symptoms and may be found during routine exams.

Stage I vulvar cancer means the cancer is found only in the vulva, the external part of the female genital area. It is an early stage where the tumor is limited in size and has not spread to lymph nodes or other parts of the body. Understanding this stage helps guide treatment options and care planning.

Stage I Wilms tumor means the kidney cancer has been completely removed by surgery and is only found in the kidney. It has not spread to nearby blood vessels, lymph nodes, or other areas. The tumor and kidney outer layer remain intact, and no cancer cells are seen at the edges of the removed tissue. This early stage often leads to more treatment options and careful monitoring.

Stage IA non-small cell lung cancer (NSCLC) means a small tumor, 3 centimeters or less, is found only in the lung and has not spread to lymph nodes. It is an early stage of the most common type of lung cancer. Symptoms may include cough, chest discomfort, or trouble breathing, but sometimes there are no symptoms. Diagnosis and staging use lung imaging and biopsies. Treatment options often include surgery and may involve other therapies.

Stage IB non-small cell lung cancer (NSCLC) means a lung tumor larger than 3 centimeters but not bigger than 4 centimeters, or a smaller tumor with certain features, without spread to lymph nodes. It is an early stage of lung cancer, often found through symptoms like cough or chest discomfort. Treatment options include surgery, chemotherapy, radiation, targeted therapy, and immunotherapy. Smoking is the main risk factor.

Stage II Adenosarcoma of the Uterus is a rare cancer where the tumor has spread beyond the uterus into nearby pelvic tissues such as the ovaries or fallopian tubes. Treatment and outlook depend on the cancer’s spread, tumor size, and overall health. It’s important to discuss what this stage means personally with your care team.

Stage II adrenocortical cancer means the tumor in the adrenal gland is larger than 5 centimeters but has not spread beyond the gland. This stage is determined through imaging tests and helps doctors plan treatment. Understanding the stage helps patients and caregivers know more about the cancer’s size and spread, but it’s important to discuss what it means for each person with the care team.

Stage II Adult Hodgkin Lymphoma is a type of cancer where Hodgkin lymphoma cells are found in two or more groups of lymph nodes on the same side of the diaphragm, or have spread to nearby tissues. Symptoms may include swollen lymph nodes, fever, night sweats, weight loss, and fatigue. Diagnosis and staging involve tests of the lymph system and other body parts to guide treatment and prognosis.

Stage II Adult Non-Hodgkin Lymphoma means cancer is found in two or more groups of lymph nodes on the same side of the diaphragm or has spread to nearby tissues. Non-Hodgkin lymphoma is a cancer of the lymph system, which helps the body fight infection. Treatment and outlook depend on many factors, so it’s important to discuss what this stage means for each person with their care team.

Stage II Adult Soft Tissue Sarcoma of the Retroperitoneum is a type of cancer where a tumor forms in the soft tissues behind the abdominal organs. At this stage, the tumor is 5 centimeters or smaller and is considered mid-grade or high-grade, meaning the cancer cells look more abnormal and may grow faster. Understanding this term helps patients discuss diagnosis and treatment options with their care team.

Stage II adult soft tissue sarcoma of the trunk, arms, and legs is a cancer that forms in the soft tissues like muscles, fat, or blood vessels in these body areas. At this stage, the tumor is 5 centimeters or smaller and has mid-grade or high-grade cancer cells, which tend to grow and spread faster than low-grade cells. Treatment and outlook depend on the tumor’s size, grade, and location.

Stage II AIDS-Related Lymphoma means cancer cells are found in two or more groups of lymph nodes either above or below the diaphragm. It is a type of lymphoma occurring in people with AIDS, where the immune system is weakened. Understanding this stage helps guide treatment decisions and care planning.

Stage II anal cancer means the tumor is larger than 2 centimeters and is divided into two parts: stage IIA (tumor larger than 2 cm but not more than 5 cm) and stage IIB (tumor larger than 5 cm). Knowing the stage helps doctors plan the best treatment. It’s important to talk with your care team about what this stage means for your specific situation.

Stage II bladder cancer means the cancer has grown into the muscle layer of the bladder wall. This stage is sometimes called muscle-invasive bladder cancer. Understanding the stage helps doctors plan treatment and predict how the cancer might behave. If you hear this term, it’s important to ask your care team what it means for your specific situation.

Stage II cervical cancer means the cancer has spread beyond the cervix to the upper two-thirds of the vagina or to the tissue around the uterus. It is divided into stages IIA and IIB, depending on how far the cancer has spread and the size of the tumor. Knowing the stage helps doctors plan the best treatment.

Stage II Childhood Hodgkin Lymphoma means cancer is found in two or more groups of lymph nodes either above or below the diaphragm, or it has spread to nearby tissues. It is a type of cancer that starts in the lymph system, which helps fight infection. Diagnosis and staging involve tests to see where the cancer is. Treatment often includes chemotherapy and/or radiation therapy. Understanding the stage helps guide care decisions.

Stage II Childhood Non-Hodgkin Lymphoma means cancer is found in one area outside the lymph nodes and nearby lymph nodes, or in two or more areas above or below the diaphragm, possibly involving nearby lymph nodes. It is a type of cancer that starts in the lymph system, part of the immune system. Treatment may include chemotherapy, radiation, targeted therapy, or stem cell transplant. Always discuss what this stage means for your child with the care team.

Stage II Chronic Lymphocytic Leukemia (CLL) means there are too many lymphocytes (a type of white blood cell) in the blood, and the liver or spleen is larger than normal. Lymph nodes may also be enlarged. This stage helps doctors understand how far the leukemia has spread and guides treatment decisions.

Stage II colorectal cancer, also known as Dukes B colorectal cancer, means the cancer has grown through the muscle layer of the colon or rectum and reached the outermost layer but has not spread to lymph nodes or distant parts of the body. It is important to discuss what this stage means for your individual diagnosis and treatment with your healthcare team.

Stage II distal bile duct cancer means the cancer has grown into the wall of the distal bile duct and may have spread to 1 to 3 nearby lymph nodes. It is divided into stages IIA and IIB based on how far the cancer has grown into the duct wall. Understanding this stage helps doctors plan treatment and predict outcomes. Patients should discuss what this stage means for their individual case with their care team.

Stage II endometrial cancer means that cancer cells have spread from the lining of the uterus into the connective tissue of the cervix but have not spread beyond the uterus. It is a type of uterine cancer that may require surgery and sometimes additional treatments like radiation or chemotherapy. Understanding the stage helps guide treatment choices and follow-up care.

Stage II Endometrial Stromal Sarcoma is a type of uterine cancer where the tumor has spread beyond the uterus but remains within the pelvis. It may involve nearby organs like the ovaries or fallopian tubes. Understanding this stage helps guide treatment decisions. Patients should discuss with their care team what this stage means for their individual situation rather than relying on the term alone.

Stage II esophageal adenocarcinoma means cancer has grown into deeper layers of the esophagus wall or nearby lymph nodes. It is an early but more advanced stage than Stage I. Understanding this stage helps guide treatment decisions. Patients should discuss with their care team what this stage means for their specific case.

Stage II esophageal squamous cell carcinoma is a type of esophagus cancer where the cancer has grown deeper into the esophagus wall or spread to nearby lymph nodes. It is divided into stages IIA and IIB based on how far the cancer has spread. Understanding this stage helps guide treatment decisions and care planning.

Stage II gallbladder cancer means the cancer has grown beyond the innermost layer of the gallbladder wall into deeper layers but has not spread to the liver. Treatment and outlook depend on how far the cancer has spread within the gallbladder, whether it can be removed by surgery, and the patient’s overall health.

Stage II Gastric Cancer (also called Stage II Stomach Cancer) describes cancer that has grown deeper into the layers of the stomach wall and may have spread to nearby lymph nodes. Understanding this stage helps doctors plan treatment. If you see this term in your medical report, ask your care team what it means for your specific situation.

Stage II Gestational Trophoblastic Neoplasia (GTN) means that abnormal cells from a pregnancy-related tumor have spread beyond the uterus to nearby areas like the ovary, fallopian tube, vagina, or tissues around the uterus. This stage helps doctors decide the best treatment, which may include surgery, chemotherapy, or radiation, depending on the tumor type and spread.

Stage II HPV-negative oropharyngeal cancer is a type of throat cancer where the tumor is larger than 2 centimeters but not larger than 4 centimeters and is not linked to human papillomavirus (HPV) infection. Diagnosis involves exams of the mouth and throat, and treatment depends on the cancer’s size, location, and the patient’s overall health. This type of cancer may have different treatment options and outlook compared to HPV-positive cases.

Stage II HPV-positive oropharyngeal cancer is a type of throat cancer linked to human papillomavirus (HPV) infection. It involves tumors or lymph nodes of certain sizes in the oropharynx, the middle part of the throat. Diagnosis and staging use exams of the mouth and neck. Treatment and outlook depend on cancer stage, HPV status, and overall health.

Stage II hypopharyngeal cancer means the cancer is found in more than one area of the lower throat (hypopharynx) or is a tumor between 2 and 4 centimeters in size that has not spread to the voice box. It is a type of head and neck cancer often linked to tobacco and heavy alcohol use. Early symptoms are rare, so diagnosis may come after signs like sore throat or ear pain. Treatment options include surgery, radiation, and sometimes chemotherapy.

Stage II intrahepatic bile duct cancer means the cancer has grown through the wall of a bile duct inside the liver and into a nearby blood vessel, or there is more than one tumor in the bile duct that may have spread into a blood vessel. This stage helps doctors understand how far the cancer has grown and plan treatment. Patients should discuss what this stage means for their care with their medical team.

Stage II kidney cancer, also called stage II renal cell cancer, means the tumor is larger than 7 centimeters but is still found only in the kidney. It is one of the stages used to describe how far kidney cancer has grown. Understanding the stage helps guide treatment decisions and follow-up care. The term may appear in medical reports or treatment plans, so comparing wording can help avoid confusion.

Stage II laryngeal cancer means cancer has formed in parts of the voice box (larynx) and may have spread within nearby areas but the vocal cords still work normally or may not work normally depending on the spread. Tests of the throat and neck help diagnose and stage this cancer. Treatment depends on the cancer’s location, size, and impact on speaking, breathing, and swallowing.

Stage II leiomyosarcoma of the uterus means the cancer has spread beyond the uterus but remains within the pelvis. It is a rare cancer that starts in the muscles or supporting tissues of the uterus. Treatment and outlook depend on factors like tumor size, spread, and overall health. Understanding this stage helps guide care decisions.

Stage II lip and oral cavity cancer means the tumor is larger than in early stages but still limited in size and depth. Treatment depends on tumor size, location, and the patient’s health, aiming to preserve appearance and function. People with this cancer have a higher risk of developing another cancer in the head or neck area.

Stage II Malignant Pleural Mesothelioma means cancer is found in the lining of one side of the chest and may have spread to nearby tissues or lymph nodes. Knowing the stage helps doctors plan the best treatment. It’s important to discuss what this stage means for each person with the care team, as it guides but does not decide treatment choices.

Stage II Maxillary Sinus Cancer means cancer has spread to nearby bone around the maxillary sinus, including the roof of the mouth and nose, but not to farther bones behind the upper jaw. Treatment and outlook depend on tumor size, location, cancer type, and overall health. Options may include surgery, radiation, and chemotherapy.

Stage II Medullary Thyroid Cancer means the cancer is in the thyroid and either the tumor is larger than 2 centimeters or it has spread to nearby neck muscles. This type of thyroid cancer starts in special cells called C cells. Because medullary thyroid cancer can run in families, relatives might be tested to see if they are at risk. Talk with your care team about what this stage means for you.

Stage II melanoma is a classification of skin cancer where the tumor is thicker and may have ulceration but has not spread to lymph nodes or distant sites. It is diagnosed through skin exams and biopsy, and understanding this stage helps guide treatment and follow-up care. Patients should discuss what this stage means for their individual case with their healthcare team.

Stage II Merkel Cell Carcinoma is a classification of Merkel cell skin cancer where the tumor is larger than 2 centimeters or has spread into nearby tissues like muscle, cartilage, or bone. It is important for patients and caregivers to understand this stage in context and discuss with their care team how it applies to their individual diagnosis and treatment plan.

Stage II multiple myeloma is a type of cancer where an abnormal number of plasma cells have spread moderately throughout the body. These cells build up in the bone marrow and can form tumors in bones. Diagnosis involves blood, bone marrow, and urine tests. Treatment options vary and depend on several factors, including the stage and overall health.

Stage II Mycosis Fungoides is a type of skin lymphoma where cancerous T-cells affect the skin and sometimes nearby lymph nodes. It includes two parts: IIA, where skin patches or plaques appear with non-cancerous lymph node changes, and IIB, where one or more skin tumors are present. Diagnosis involves skin and blood tests, and treatment options vary based on the stage and symptoms.

Stage II nasal cavity and ethmoid sinus cancer means cancer is found in two nearby areas of the nasal cavity or ethmoid sinus, or it has spread to nearby tissues. Treatment and outlook depend on tumor size, location, cancer type, and overall health. Common treatments include surgery, radiation, and chemotherapy. Exposure to certain workplace chemicals and dust can increase risk.

Stage II nasopharyngeal cancer means the cancer has grown beyond the nasopharynx to nearby areas or lymph nodes but is still limited in size. Symptoms may include a lump in the neck, ear pain or ringing, trouble hearing, sore throat, or nosebleeds. Diagnosis involves tests of the nose, throat, and nearby tissues. Treatment and outlook depend on the cancer’s size, spread, and certain blood markers.

Stage II nonmelanoma skin cancer on the eyelid refers to basal cell carcinoma or squamous cell carcinoma that has grown larger or spread within the eyelid area. Treatment depends on the cancer type, tumor size, exact location, and overall health. Understanding this stage helps guide care but should always be discussed with your healthcare team for personalized information.

Stage II nonmelanoma skin cancer on the head and neck (not on the eyelid) refers to a skin cancer tumor that is larger than 2 centimeters but not larger than 4 centimeters. It includes basal cell carcinoma and squamous cell carcinoma, common skin cancers often caused by sun exposure. Treatment and outlook depend on the cancer type, tumor size, location, and overall health.

Stage II Ovarian Borderline Tumor, also called Stage II Ovarian Low Malignant Potential Tumor, is a condition where abnormal cells are found in one or both ovaries or fallopian tubes and have spread to nearby pelvic organs. These tumors usually grow slowly and have a better outlook than typical ovarian cancers. Diagnosis involves exams and imaging tests, and treatment depends on tumor size, spread, and patient health.

Stage II ovarian epithelial, fallopian tube, and primary peritoneal cancer means cancer has spread from the ovaries or fallopian tubes into nearby pelvic organs. These cancers start in similar tissues and are treated similarly. Understanding the stage helps guide treatment, but it’s important to discuss what this means for each person with the care team.

Stage II ovarian germ cell tumor means cancer has spread from the ovary or fallopian tube into other parts of the pelvis. This stage is divided into IIA, where cancer has spread to the uterus or fallopian tubes, and IIB, where it has spread to other pelvic organs. Understanding the stage helps guide treatment and care decisions.

Stage II Ovarian Low Malignant Potential Tumor, also called Stage II Ovarian Borderline Tumor, is a condition where abnormal cells are found in one or both ovaries or fallopian tubes and have spread to nearby pelvic organs. These tumors usually grow slowly and have a better outlook than typical ovarian cancers. Diagnosis involves exams and imaging tests, and treatment depends on tumor size, spread, and patient health.

Stage II pancreatic cancer means the cancer has grown larger or spread to nearby lymph nodes but has not spread to distant parts of the body. It can be hard to detect early because symptoms often don’t appear or are like other illnesses. Treatment options may include surgery, chemotherapy, radiation, or supportive care, depending on the tumor size, spread, and overall health.

Stage II papillary and follicular thyroid cancer in people 55 years and older refers to a type of well-differentiated thyroid cancer where the tumor size and spread to nearby lymph nodes or muscles meet specific criteria. These cancers can often be treated successfully. Understanding the stage helps guide treatment and follow-up care, but it is important to discuss what this means for each individual with the healthcare team.

Stage II papillary and follicular thyroid cancer in people younger than 55 means the cancer has spread beyond the thyroid to nearby tissues or other parts of the body like lymph nodes, lungs, or bones. These types of thyroid cancer are usually treatable and often curable. Understanding the stage helps doctors plan the best treatment and follow-up care for each person.

Stage II penile cancer means the cancer has grown deeper into the tissues of the penis but has not spread to distant parts of the body. It is divided into stages IIA and IIB, depending on how far the cancer has spread within the penis. Knowing the stage helps doctors plan the best treatment. If you or a loved one has this diagnosis, it’s important to discuss what it means for your specific case with your care team.

Stage II perihilar bile duct cancer means the cancer has grown through the wall of the bile duct near the liver and spread to nearby fatty tissue or liver tissue. This stage helps doctors understand how far the cancer has spread and plan treatment. Patients should discuss with their care team what this stage means for their individual situation.

Stage II prostate cancer means the cancer is more advanced than stage I but has not spread outside the prostate gland. It is divided into subgroups based on how much of the prostate is affected, PSA levels, and the cancer’s grade. Treatment options vary and may include active surveillance, surgery, radiation, or hormone therapy depending on individual factors.

Stage II renal cell cancer, also called stage II kidney cancer, means the tumor in the kidney is larger than 7 centimeters but has not spread beyond the kidney. This stage helps doctors understand how far the cancer has grown and guides treatment decisions. You might see this term in medical reports or treatment plans, and it’s important to ask your care team what it means for your situation.

Stage II salivary gland cancer means the tumor is larger than 2 centimeters but not larger than 4 centimeters and is only in the salivary gland. Treatment and outlook depend on tumor size, cancer cell type, the specific salivary gland involved, and the patient’s overall health. It’s important to discuss what this stage means for each person with the care team.

Stage II Stomach Cancer (also called Stage II Gastric Cancer) means the cancer has grown deeper into the layers of the stomach wall and may have spread to nearby lymph nodes. This stage is more advanced than early stages but has not spread to distant parts of the body. Understanding this stage helps doctors plan treatment and guide patients and caregivers through care options.

Stage II testicular cancer means the cancer has spread beyond the testicle to nearby lymph nodes. It is divided into stages IIA, IIB, and IIC based on how many lymph nodes are involved and their size. Tumor marker blood tests help doctors determine the stage after surgery. Understanding the stage helps guide treatment decisions and follow-up care.

Stage II thymoma is a rare cancer that starts in the thymus gland and has spread beyond the thymus capsule into nearby fat or the lining of the chest. It is usually treated with surgery to remove the tumor, sometimes followed by radiation to kill remaining cancer cells. This stage indicates the cancer is still mostly near the thymus but has begun to grow into surrounding tissues.

Stage II transitional cell cancer of the renal pelvis and ureter means the cancer has grown into the muscle layer of these urinary tract areas. Treatment depends on the tumor’s stage and grade, the health of the other kidney, and whether the cancer has returned. Early detection often leads to successful treatment. Symptoms may include blood in the urine and back pain, but early stages might have no symptoms.

Stage II vaginal cancer means the cancer has grown through the wall of the vagina and into the nearby tissues around it, but it has not spread to the pelvic wall. Treatment options depend on factors like the cancer’s size, type of cells, and whether the patient has had previous treatments or surgeries.

Stage II vulvar cancer means the cancer has grown to any size and spread to the lower third of the urethra, vagina, or anus, but has not spread to nearby lymph nodes. This stage helps doctors plan treatment and understand the extent of the disease. If you hear this term, ask your care team how it applies to your situation.

Stage II Wilms tumor is a type of kidney cancer in children where the tumor has been completely removed by surgery, with no cancer cells found at the edges of the removed tissue. The cancer has not spread to lymph nodes but may have spread to nearby kidney areas like the renal sinus or blood vessels outside the kidney. It is important for planning treatment and follow-up care.

Stage IIA intraocular melanoma of the ciliary body and choroid is an early stage of a rare eye cancer that starts in the middle layer of the eye. It describes tumors of certain sizes that have spread to the ciliary body or through the outer eye layer but remain limited in thickness. This stage helps doctors plan treatment and understand the cancer’s behavior.

Stage IIA non-small cell lung cancer (NSCLC) means the lung tumor is larger than 4 centimeters but not larger than 5 centimeters. The cancer has not spread to lymph nodes but may involve nearby areas like the main bronchus or the lung’s covering. Symptoms can include cough, chest pain, and trouble breathing. Diagnosis and staging use lung imaging and biopsies. Treatment options include surgery, chemotherapy, radiation, targeted therapy, and immunotherapy.

Stage IIB intraocular melanoma of the ciliary body and choroid is a type of eye cancer where a tumor of a certain size has formed in parts of the eye called the ciliary body or choroid. This cancer can grow and may spread to other parts of the body. The stage helps doctors decide on treatment and understand the outlook. It is a rare cancer that starts in cells that make pigment in the eye.

Stage IIB Non-Small Cell Lung Cancer (NSCLC) means the cancer is in the lung and nearby lymph nodes on the same side of the chest. The tumor is usually 5 centimeters or smaller but may have spread to nearby areas like the main bronchus or chest lining. Symptoms can include cough, chest pain, trouble breathing, and weight loss. Diagnosis involves imaging and biopsies. Treatment options may include surgery, chemotherapy, radiation, targeted therapy, or immunotherapy.

Stage III Adenosarcoma of the uterus is a rare cancer where tumor cells have spread beyond the uterus into the abdomen or nearby lymph nodes. Treatment and outlook depend on the cancer’s spread, tumor size, and overall health. Understanding this stage helps guide care decisions and discussions with your medical team.

Stage III adrenocortical cancer means the tumor of any size has spread beyond the adrenal gland to nearby lymph nodes, tissues, organs like the kidney or liver, or large blood vessels. This stage helps doctors understand how far the cancer has grown and guides treatment decisions. Patients should discuss what this stage means for their individual care with their medical team.

Stage III Adult Hodgkin Lymphoma is a type of cancer where Hodgkin lymphoma cells are found in lymph nodes both above and below the diaphragm or in lymph nodes above the diaphragm plus the spleen. Symptoms often include swollen lymph nodes, fever, night sweats, weight loss, and fatigue. Diagnosis and staging involve tests of the lymph system and other body parts to guide treatment and understand prognosis.

Stage III Adult Non-Hodgkin Lymphoma is a type of cancer where malignant cells are found in lymph nodes both above and below the diaphragm or in lymph nodes above the diaphragm plus the spleen. It affects the lymph system, part of the immune system. Treatment and outlook vary, so it’s important to discuss what this stage means for each person with their care team.

Stage III adult soft tissue sarcoma of the retroperitoneum is a type of cancer that starts in the soft tissues located in the retroperitoneum, the area behind the abdominal organs. At this stage, the tumor is larger or has spread to nearby lymph nodes. Treatment and outlook depend on tumor size, grade, and spread. Patients should discuss what this stage means for their individual care with their medical team.

Stage III adult soft tissue sarcoma of the trunk, arms, and legs is a type of cancer that starts in the soft tissues like muscles, fat, or blood vessels in these body areas. At this stage, the tumor is larger than 5 centimeters and has cells that grow more quickly. Treatment and outlook depend on the tumor’s size, grade, and exact location.

Stage III AIDS-Related Lymphoma means cancer cells are found in lymph nodes both above and below the diaphragm or in lymph nodes above the diaphragm and the spleen. It is a type of lymphoma that occurs in people with AIDS, a condition caused by HIV that weakens the immune system. Treatment options may include chemotherapy, radiation, stem cell transplant, or targeted therapy. Understanding the stage helps guide care but should be discussed with your healthcare team for your specific situation.

Stage III anal cancer means the cancer has grown beyond the anus and may have spread to nearby lymph nodes or organs. It is divided into three parts: IIIA, where the tumor is 5 centimeters or smaller and has spread to nearby lymph nodes; IIIB, where the tumor can be any size and has spread to nearby organs like the vagina or bladder; and IIIC, where the tumor may have spread to organs and lymph nodes. Knowing the stage helps.

Stage III bladder cancer means the cancer has grown through the bladder wall into nearby tissues or has spread to certain lymph nodes in the pelvis. It is divided into stages IIIA and IIIB based on how far the cancer has spread. Understanding the stage helps guide treatment decisions. Patients should always discuss what this stage means for their individual case with their care team.

Stage III cervical cancer means the cancer has spread beyond the cervix to nearby areas such as the lower third of the vagina, the pelvic wall, or lymph nodes. It may also cause kidney problems. This stage is divided into IIIA, IIIB, and IIIC based on how far the cancer has spread. Knowing the stage helps doctors plan the best treatment.

Stage III Childhood Hodgkin Lymphoma means cancer is found in lymph nodes both above and below the diaphragm (the muscle under the lungs) or in lymph nodes above the diaphragm and the spleen. It is a type of cancer affecting the lymph system in children and adolescents. Diagnosis and staging involve tests to see where the cancer is in the body. Treatment usually includes chemotherapy and/or radiation therapy.

Stage III Childhood Non-Hodgkin Lymphoma means the cancer is found in lymph areas both above and below the diaphragm or in certain other locations like the chest or abdomen. It is a type of cancer that starts in the lymph system, part of the body’s immune system. Treatment often involves chemotherapy and may include radiation or stem cell transplant. Understanding this stage helps guide care but should be discussed with your child’s healthcare team for personalized meaning.

Stage III Chronic Lymphocytic Leukemia (CLL) means there are too many lymphocytes (a type of white blood cell) in the blood, along with a low number of red blood cells. The lymph nodes, liver, or spleen may also be larger than usual. This stage helps doctors understand how far the leukemia has spread and guides treatment decisions.

Stage III distal bile duct cancer means the cancer has grown beyond the early layers of the bile duct and may have spread to nearby lymph nodes or large blood vessels in the abdomen. It is divided into two parts: IIIA, where cancer involves the bile duct wall and four or more nearby lymph nodes, and IIIB, where cancer has spread to major blood vessels. Understanding this stage helps guide treatment decisions and care planning.

Stage III endometrial cancer means that cancer cells have spread beyond the uterus and cervix but remain within the pelvic area. It is divided into subgroups based on how far the cancer has spread to nearby tissues or lymph nodes. Treatment often involves surgery and may include radiation, chemotherapy, or hormone therapy depending on the extent of spread and other factors.

Stage III Endometrial Stromal Sarcoma means the cancer has spread beyond the uterus into tissues in the abdomen. It is divided into three parts depending on how far the cancer has spread: to one site in the abdomen, multiple sites, or nearby lymph nodes. Understanding this stage helps guide treatment decisions. Patients should discuss what this stage means for their individual care with their medical team.

Stage III esophageal adenocarcinoma is a diagnosis where cancer has grown deeper into the layers of the esophagus and spread to nearby lymph nodes. It is divided into stages IIIA and IIIB based on how far the cancer has spread. Understanding this stage helps guide treatment decisions and care planning. Patients should discuss what this stage means for their individual situation with their healthcare team.

Stage III esophageal squamous cell carcinoma is a type of esophagus cancer where the tumor has grown deeper into the esophagus wall and may have spread to nearby lymph nodes or tissues. It is divided into stages IIIA and IIIB based on how far the cancer has spread. Understanding the stage helps doctors plan treatment and predict how the cancer might behave.

Stage III gallbladder cancer means the cancer has grown beyond the gallbladder wall and may have spread to nearby organs or lymph nodes. Treatment and outlook depend on how far the cancer has spread, whether surgery can remove it, the cancer type, and the patient’s overall health. Tests to find and stage the cancer are done when it is diagnosed.

Stage III Gastric Cancer, also called Stage III Stomach Cancer, describes stomach cancer that has grown deeper into the stomach wall and spread to nearby lymph nodes or organs. Knowing the stage helps doctors decide the best treatment plan. Stage III is divided into IIIA, IIIB, and IIIC, based on how far the cancer has spread within the stomach layers and to nearby tissues.

Stage III Gestational Trophoblastic Neoplasia (GTN) means that abnormal trophoblast cells, which grow after pregnancy, have spread to the lungs and possibly nearby reproductive organs or tissues. GTN is a rare type of cancer that develops from pregnancy-related tissue. Treatment depends on the stage and type of disease, and may include chemotherapy, surgery, or radiation.

Stage III HPV-negative oropharyngeal cancer is a type of throat cancer that is larger than 4 centimeters or has spread to nearby lymph nodes but is not linked to human papillomavirus (HPV). It affects parts of the throat like the tonsils or the back of the tongue. Understanding this stage helps guide treatment choices and care planning, but it’s important to discuss what it means for each person with the healthcare team.

Stage III HPV-positive oropharyngeal cancer is a type of throat cancer that has spread to nearby areas like the voice box or lymph nodes. It is linked to infection with human papillomavirus (HPV), which often means a better outlook than HPV-negative cancers. Diagnosis involves exams and tests of the mouth and throat. Treatment and prognosis depend on cancer spread, HPV status, and overall health.

Stage III hypopharyngeal cancer is a type of throat cancer where the tumor is larger than 4 centimeters or has spread to nearby areas like the voice box or esophagus. It may also involve one lymph node on the same side of the neck. This stage often requires careful treatment planning and depends on factors like overall health and whether the patient smokes during therapy.

Stage III intrahepatic bile duct cancer means the cancer has grown beyond the liver’s inner bile ducts and spread either through the liver’s outer lining or to nearby organs or lymph nodes. This stage is divided into IIIA and IIIB based on how far the cancer has spread. It’s important to discuss with your care team what this stage means for your specific situation rather than relying on the term alone.

Stage III kidney cancer, also called stage III renal cell cancer, means the cancer has grown beyond the kidney to nearby lymph nodes or blood vessels, or into the fat around the kidney. It may be any size but has spread locally. Understanding this stage helps guide treatment and follow-up care. The term may appear in medical reports or treatment plans, so comparing wording can help avoid confusion.

Stage III laryngeal cancer means cancer has grown in the voice box area and may have spread to nearby tissues or one lymph node in the neck. It can affect how the vocal cords work. Doctors use tests to find out the exact location and size of the tumor to guide treatment, which may include surgery, radiation, or chemotherapy. Understanding the stage helps patients and caregivers discuss personalized care plans with their medical team.

Stage III leiomyosarcoma of the uterus is a rare cancer where tumor cells have spread beyond the uterus into the abdomen or nearby lymph nodes. Treatment and outlook depend on how far the cancer has spread, the tumor’s size, and the patient’s overall health. Understanding this stage helps guide care decisions and discussions with your medical team.

Stage III lip and oral cavity cancer means the tumor is larger than 2 centimeters but not larger than 4 centimeters with deep invasion, or larger than 4 centimeters with less deep invasion, or has spread to one nearby lymph node. Treatment depends on tumor size, location, and patient health. Patients with this cancer have a higher risk of developing a second head or neck cancer.

Stage III lymphedema, also called lymphostatic elephantiasis, is the most advanced form of lymphedema. It causes severe swelling, usually in an arm or leg, with skin that becomes hard, thick, and sometimes darker. This condition often results from damage or blockage of lymph vessels or nodes, commonly due to cancer or its treatments like surgery or radiation.

Stage III Malignant Pleural Mesothelioma is an advanced stage of cancer affecting the lining of the lungs. At this stage, the cancer has spread beyond the lung lining to nearby tissues and lymph nodes on the same or opposite side of the chest. Understanding this stage helps doctors plan the most appropriate treatment and care for each person.

Stage III maxillary sinus cancer is a type of cancer that has spread beyond the maxillary sinus to nearby bones, tissues, or lymph nodes. Treatment and outlook depend on tumor size, spread, cancer type, and overall health. Common treatments include surgery, radiation, and chemotherapy. Exposure to certain workplace chemicals and dust may increase risk.

Stage III medullary thyroid cancer means the cancer has spread beyond the thyroid to nearby muscles and lymph nodes in the neck. It is a type of thyroid cancer that starts in special cells called C cells. Family members may be tested because this cancer can sometimes run in families. Understanding the stage helps doctors plan treatment and follow-up care.

Stage III Merkel Cell Carcinoma is a more advanced form of Merkel cell skin cancer where the tumor may be any size and cancer has spread to nearby lymph nodes or tissues. It is divided into stages IIIA and IIIB based on how the cancer has spread. Understanding this stage helps guide treatment decisions and follow-up care. Patients should discuss what this stage means for their individual case with their healthcare team.

Stage III multiple myeloma is an advanced form of a cancer that affects plasma cells, a type of white blood cell found in bone marrow. At this stage, many cancer cells have spread throughout the body, often causing symptoms like anemia, high blood calcium, multiple bone tumors, or high levels of abnormal proteins in the blood or urine. Diagnosis involves blood, bone marrow, and urine tests, and treatment may include chemotherapy, radiation, and other therapies.

Stage III mycosis fungoides is a type of skin lymphoma where 80% or more of the skin is reddened and may have patches, raised bumps, plaques, or tumors. Lymph nodes may be enlarged but not cancerous, and a small number of cancerous T-cells may be found in the blood. Diagnosis involves skin and blood tests, and treatment options vary based on the stage and symptoms.

Stage III nasal cavity and ethmoid sinus cancer means cancer has spread beyond the nasal cavity or ethmoid sinus to nearby areas like parts of the eye socket, roof of the mouth, or nearby bones, and to a small lymph node on the same side of the neck. Treatment and outlook depend on tumor size, spread, cancer type, and overall health. Options may include surgery, radiation, and chemotherapy.

Stage III nasopharyngeal cancer means the cancer has grown beyond the nasopharynx and spread to nearby areas or lymph nodes on both sides of the neck. Symptoms may include trouble breathing, hearing issues, or lumps in the neck. Diagnosis involves exams and biopsies of the nose and throat. Treatment options and outlook depend on the cancer’s size, spread, and certain blood markers.

Stage III nonmelanoma skin cancer on the eyelid refers to basal cell carcinoma or squamous cell carcinoma that has grown beyond the surface of the eyelid and may have spread to nearby tissues or lymph nodes. Treatment depends on the cancer type, size, spread, and overall health. It’s important to discuss what this stage means for each person with their care team.

Stage III nonmelanoma skin cancer on the head and neck (not on the eyelid) refers to a more advanced basal cell or squamous cell skin cancer in these areas. It means the tumor is larger, has grown deeper, or has spread to nearby lymph nodes. Treatment depends on the cancer type, size, spread, and the patient’s overall health. Discuss with your care team how this stage applies to your situation.

Stage III ovarian borderline tumor is a condition where abnormal cells grow on the ovaries or fallopian tubes and have spread beyond the pelvis to other parts of the abdomen or nearby lymph nodes. Symptoms may include abdominal pain or swelling. Diagnosis involves tests to examine the ovaries and surrounding areas. Treatment and outlook depend on tumor size, spread, cell type, and overall health. This tumor is also called stage III ovarian low malignant potential tumor.

Stage III ovarian epithelial, fallopian tube, and primary peritoneal cancer means cancer has spread beyond the pelvis to other parts of the abdomen or nearby lymph nodes. These cancers start in similar tissues and are treated similarly. Understanding the stage helps guide treatment, but it’s important to discuss what this means for each person with the care team.

Stage III ovarian germ cell tumor means cancer has spread beyond the ovaries or fallopian tubes into the abdomen or nearby lymph nodes. This stage is divided into IIIA, IIIB, and IIIC, depending on how far the cancer has spread. Understanding this stage helps guide treatment decisions and discussions with your care team.

Stage III ovarian low malignant potential tumor, also called stage III ovarian borderline tumor, is when abnormal cells grow on one or both ovaries or fallopian tubes and have spread beyond the pelvis to other parts of the abdomen or nearby lymph nodes. Symptoms may include abdominal pain or swelling. Diagnosis involves exams and imaging. Treatment and outlook depend on tumor size, spread, cell type, and overall health.

Stage III pancreatic cancer means the cancer has grown beyond the pancreas and spread to nearby major blood vessels or to four or more nearby lymph nodes. It is often hard to detect early because symptoms may not appear or can be like other illnesses. Treatment options depend on the cancer’s spread, the patient’s health, and whether surgery is possible.

Stage III papillary and follicular thyroid cancer in people 55 years and older means the cancer has spread beyond the thyroid to nearby tissues or lymph nodes. These types of thyroid cancer are usually well-differentiated, meaning they tend to grow slowly and can often be treated successfully. Understanding the stage helps doctors plan the best treatment and care for each person.

Stage III penile cancer means the cancer has spread from the penis to nearby lymph nodes in the groin. It is divided into two groups: IIIA, where cancer is in the penis and 1 or 2 lymph nodes on one side of the groin, and IIIB, where cancer has spread to 3 or more lymph nodes on one side or lymph nodes on both sides. Knowing the stage helps guide treatment decisions.

Stage III perihilar bile duct cancer means the cancer has spread beyond the bile duct near the liver to nearby blood vessels or lymph nodes. It is divided into stages IIIA, IIIB, and IIIC, depending on how far the cancer has spread. Understanding this stage helps doctors plan treatment, but it’s important to talk with your care team about what it means for you personally.

Stage III prostate cancer means the cancer has grown beyond the prostate gland and may have spread to nearby tissues or organs. It is divided into stages IIIA, IIIB, and IIIC, depending on how far the cancer has spread and certain test results. Treatment and outlook depend on the cancer’s stage, PSA levels, Gleason score, and the patient’s overall health.

Stage III renal cell cancer, also called stage III kidney cancer, means the cancer has grown beyond the kidney to nearby lymph nodes, blood vessels, or the fat around the kidney. The tumor can be any size but has spread locally. Understanding this stage helps guide treatment and follow-up care. The term may appear in medical reports or treatment plans, so comparing wording can help avoid confusion.

Stage III salivary gland cancer means the tumor is larger than 4 centimeters or has spread to nearby soft tissues, and may involve one lymph node on the same side of the head or neck. Treatment and outlook depend on tumor size, location, cell type, and overall health. Symptoms can include a lump or trouble swallowing. Diagnosis involves exams and imaging of the head, neck, and mouth.

Stage III Stomach Cancer, also called Stage III Gastric Cancer, means the cancer has grown deeper into the stomach wall and spread to nearby lymph nodes or organs. It is divided into stages IIIA, IIIB, and IIIC based on how far the cancer has spread. Knowing the stage helps doctors plan treatment and understand the cancer’s extent.

Stage III testicular cancer means the cancer has spread beyond the testicle to nearby lymph nodes or other parts of the body, such as the lungs. Doctors use blood tests for tumor markers and imaging to determine this stage. Understanding the stage helps guide treatment decisions and follow-up care. Patients should discuss what this stage means for their specific case with their healthcare team.

Stage III thymoma is a type of cancer that starts in the thymus gland and has spread to nearby organs in the chest, such as the lungs, the sac around the heart, or large blood vessels. It is a rare cancer that may cause symptoms like cough or chest pain, but sometimes has no symptoms at first. Treatment often involves surgery and may include radiation or targeted therapies.

Stage III transitional cell cancer of the renal pelvis and ureter is a type of cancer that has spread from the muscle layer into nearby fat or kidney tissue. It affects the transitional cells lining parts of the kidney and ureter. Treatment depends on tumor details and kidney health. Early detection improves chances of cure. Symptoms may include blood in urine and back pain, but early stages might have no symptoms.

Stage III vaginal cancer means the cancer has spread to the wall of the pelvis. Treatment choices depend on factors like the cancer’s size, type of cells involved, whether the patient has a uterus, and any past radiation to the pelvis. Symptoms may include pain or unusual vaginal bleeding. Diagnosis involves exams and tests of the vagina and nearby organs. Treatment may include surgery, topical chemotherapy, or radiation therapy.

Stage III vulvar cancer means the cancer has grown beyond the vulva to nearby tissues like the upper parts of the urethra or vagina, or to lymph nodes in the groin. It is divided into subtypes based on how far the cancer has spread in lymph nodes. Knowing the stage helps doctors plan treatment and understand the cancer’s extent.

Stage III Wilms tumor is a type of kidney cancer in children where cancer remains in the abdomen after surgery and may have spread to nearby lymph nodes or tissues. It can also mean the tumor was not completely removed or broke during surgery. This stage helps doctors plan further treatment to manage the cancer.

Stage IIIA colorectal cancer means the cancer has grown through the inner layers of the colon or rectum wall and spread to nearby lymph nodes. It is one part of stage III colorectal cancer, which is divided into IIIA, IIIB, and IIIC. Understanding this stage helps guide treatment decisions, but it’s important to discuss what it means for each person with the care team.

Stage IIIA intraocular melanoma of the ciliary body and choroid is a type of eye cancer where the tumor is larger and has spread through the outer layer of the eye or to nearby eye structures. It involves specific tumor sizes and locations in the middle layer of the eye and may require careful treatment and monitoring to manage the disease and prevent spread.

Stage IIIA melanoma is a type of skin cancer where the tumor is small to moderate in thickness and may have spread to one to three nearby lymph nodes. It is part of a broader stage III category that helps doctors understand how far the melanoma has grown and spread. Knowing the stage helps guide treatment decisions and discussions about prognosis.

Stage IIIA Non-Small Cell Lung Cancer (NSCLC) means the cancer has grown in the lung and spread to nearby lymph nodes on the same side of the chest. The tumor is usually 5 centimeters or smaller but may have spread to nearby structures. This stage is part of a group called Stage III, which is more advanced than early lung cancer but not yet widely spread. Treatment options vary and depend on individual factors.

Stage IIIB colorectal cancer means the cancer has grown through the muscle layer of the colon or rectum wall and may have spread to nearby lymph nodes or tissues lining organs in the abdomen. It is one part of stage III colorectal cancer, which is divided into IIIA, IIIB, and IIIC. Understanding this stage helps guide treatment and care decisions, but it’s important to discuss what it means for each person with the healthcare team.

Stage IIIB intraocular melanoma of the ciliary body and choroid is an advanced form of eye cancer that involves a tumor of specific size and spread. It affects parts of the eye called the ciliary body and choroid and may extend outside the eyeball. This stage helps doctors plan treatment and understand the cancer’s behavior.

Stage IIIB melanoma is a classification of skin cancer where melanoma cells have spread beyond the original tumor to nearby lymph nodes or small clusters of cancer cells near the skin. It is part of a group of stages that describe how far melanoma has spread. Understanding this stage helps guide treatment decisions and prognosis but should always be discussed with your care team for your specific situation.

Stage IIIB Non-Small Cell Lung Cancer (NSCLC) is a form of lung cancer where the tumor is 5 centimeters or smaller but has spread to lymph nodes above the collarbone or to lymph nodes on the opposite side of the chest. It is part of stage III NSCLC, which is divided into IIIA, IIIB, and IIIC. Understanding this stage helps guide treatment decisions and discussions with your care team.

Stage IIIC colorectal cancer is a specific category of stage III colorectal cancer where the cancer has spread through the outer layer of the colon or rectum and to nearby lymph nodes or organs. It is important for patients and caregivers to understand this term in context and discuss with their care team how it applies to their individual situation, rather than relying on the term alone for diagnosis or treatment decisions.

Stage IIIC intraocular melanoma of the ciliary body and choroid is an advanced eye cancer where a large tumor has grown through the outer layer of the eye and spread outside the eyeball. This rare cancer starts in cells that produce pigment in parts of the eye called the ciliary body and choroid. It may require careful treatment and follow-up because it can spread to other parts of the body or come back after treatment.

Stage IIIC melanoma is a type of skin cancer where the original tumor may no longer be visible or its starting point is unknown. It involves cancer spread to multiple lymph nodes or nearby skin areas. Understanding this stage helps patients and caregivers discuss diagnosis and treatment options with their care team, as it guides decisions but does not alone determine outcomes.

Stage IIIC non-small cell lung cancer (NSCLC) is an advanced form of lung cancer where the tumor can be any size and has spread to lymph nodes above the collarbone or to lymph nodes on the opposite side of the chest. It may also involve nearby structures such as the chest wall or major blood vessels. Treatment options vary and should be discussed with your care team.

Stage IIID melanoma is an advanced form of skin cancer where the tumor is thick (more than 4 millimeters) and has ulceration, with cancer cells found in multiple nearby lymph nodes or skin areas. It is part of stage III melanoma, which means the cancer has spread beyond the original tumor but not to distant organs. Understanding this stage helps guide treatment and care decisions.

Stage IV adenosarcoma of the uterus is a rare cancer that starts in the muscles or supporting tissues of the uterus and has spread beyond the uterus. The cancer may have spread to nearby organs like the bladder or rectum (stage IVA) or to distant parts of the body (stage IVB). Treatment and outlook depend on many factors, including the cancer’s spread, tumor size, and overall health. Patients should discuss what this stage means for their individual care.

Stage IV adrenocortical cancer means the cancer has spread beyond the adrenal gland to other parts of the body, such as the lungs, bones, or lining of the abdomen. It may also involve nearby lymph nodes. This stage helps doctors understand how far the cancer has spread and guides treatment decisions. Patients should discuss what this stage means for their individual case with their care team.

Stage IV adult Hodgkin lymphoma is an advanced form of Hodgkin lymphoma where cancer has spread beyond the lymph system to other organs or multiple lymph node areas. Symptoms often include swollen lymph nodes, fever, night sweats, weight loss, and fatigue. Diagnosis and staging involve tests to see how far the cancer has spread, which helps guide treatment decisions.

Stage IV Adult Non-Hodgkin Lymphoma is an advanced form of cancer that starts in the lymph system and has spread to organs outside the lymph nodes or to multiple lymph node groups above and below the diaphragm. It is important to understand this term in context and discuss with your care team how it applies to your specific situation and treatment options.

Stage IV adult soft tissue sarcoma of the retroperitoneum is an advanced cancer where malignant cells form in the soft tissues located in the retroperitoneal area (the space behind the abdominal organs) and have spread to other parts of the body, such as the lungs. Treatment and outlook depend on tumor type, size, grade, and spread. Patients should discuss what this stage means for their individual care with their medical team.

Stage IV adult soft tissue sarcoma of the trunk, arms, and legs is a type of cancer that starts in the soft tissues like muscles, fat, or blood vessels in these body areas. At stage IV, the cancer has spread to nearby lymph nodes or other parts of the body, such as the lungs. Treatment and outlook depend on the tumor’s size, grade, and spread.

Stage IV AIDS-related lymphoma means that lymphoma cancer cells have spread widely beyond the lymph system to other organs or multiple lymph node groups. It is a type of cancer seen in people with AIDS, caused by the human immunodeficiency virus (HIV). Understanding this stage helps guide treatment and care decisions, but it is important to discuss what it means for each person with the healthcare team.

Stage IV anal cancer means the cancer has spread beyond the anus to other parts of the body, such as the liver or lungs. The tumor can be any size. Knowing the stage helps doctors plan the best treatment. If you hear this term, it’s important to ask your care team what it means for your specific situation.

Stage IV bladder cancer means the cancer has spread beyond the bladder to nearby tissues or distant parts of the body. It is divided into stage IVA, where cancer has spread to the abdominal or pelvic wall or certain lymph nodes, and stage IVB, where it has spread to other organs like the lungs, bones, or liver. Understanding the stage helps guide treatment decisions and discussions with your care team.

Stage IV cervical cancer means the cancer has spread beyond the pelvis to nearby organs like the bladder or rectum, or to distant parts of the body such as the liver, lungs, bones, or distant lymph nodes. It is divided into stage IVA (spread to nearby pelvic organs) and stage IVB (spread to distant sites). Knowing the stage helps guide treatment decisions.

Stage IV Childhood Hodgkin Lymphoma means the cancer has spread beyond the lymph system to other organs or multiple lymph node areas. It is diagnosed using tests that check the lymph system and other body parts. Understanding this stage helps families discuss treatment and care options with their medical team.

Stage IV Childhood Non-Hodgkin Lymphoma means the cancer has spread to the bone marrow, brain, or cerebrospinal fluid, or other parts of the body. It is a type of cancer that starts in the lymph system, part of the immune system. Diagnosis and staging involve tests to see where the cancer is. Treatment may include chemotherapy, radiation, targeted therapy, or stem cell transplant. Always discuss what this stage means for your child with the care team.

Stage IV Chronic Lymphocytic Leukemia (CLL) means there are too many abnormal lymphocytes in the blood, along with low platelet counts. The cancer may have spread to lymph nodes, liver, or spleen, which can be larger than normal. This advanced stage can affect blood cell counts and may cause symptoms like tiredness or easy bruising.

Stage IV colorectal cancer means the cancer has spread beyond the colon or rectum to other parts of the body. It is divided into stages IVA, IVB, and IVC, depending on how far the cancer has spread. Understanding this stage helps patients and caregivers discuss diagnosis and treatment options with their care team in a personalized way.

Stage IV distal bile duct cancer means the cancer has spread beyond the bile duct to other parts of the body, such as the liver, lungs, or the lining of the abdomen. This stage indicates advanced disease and helps doctors plan treatment and care. This entry helps connect the word with diagnoses, testing, treatments, supportive care, research notes, protocols, media, books, people, organizations, and safety concerns.

Stage IV endometrial cancer means that cancer cells have spread beyond the pelvis, either to nearby organs like the bladder or bowel (stage IVA) or to other parts of the body such as the abdomen or lymph nodes in the groin (stage IVB). This advanced stage often requires treatments beyond surgery, including radiation, chemotherapy, or hormonal therapy.

Stage IV Endometrial Stromal Sarcoma is an advanced form of a rare uterine cancer that starts in the connective tissue of the uterus. At this stage, the cancer has spread beyond the uterus to nearby organs or distant parts of the body. Understanding this term is important, but it’s best to discuss what it means for each person with the healthcare team, as treatment and outlook depend on many factors.

Stage IV esophageal adenocarcinoma means the cancer has spread beyond the esophagus to nearby tissues or distant parts of the body, such as the liver or lungs. Staging helps doctors understand how far the cancer has grown and guides treatment decisions. Patients should discuss what this stage means for their individual case with their care team.

Stage IV esophageal squamous cell carcinoma is an advanced form of esophageal cancer where the cancer has spread beyond the esophagus to nearby organs or distant parts of the body. It is divided into stages IVA and IVB, depending on how far the cancer has spread. Understanding this stage helps guide treatment decisions and care planning.

Stage IV gallbladder cancer means the cancer has spread beyond the gallbladder to nearby organs, lymph nodes, or other parts of the body. Treatment options and outlook depend on how far the cancer has spread, whether surgery can remove it, the cancer type, and the patient’s overall health. This stage is often more challenging to treat and may involve chemotherapy, radiation, or clinical trials.

Stage IV Gastric Cancer, also called Stage IV Stomach Cancer, means the cancer has spread beyond the stomach to other parts of the body, such as the lungs, liver, or distant lymph nodes. Knowing the stage helps doctors plan treatment. If you see this term in your medical reports, ask your care team what it means for your specific situation.

Stage IV Gestational Trophoblastic Neoplasia (GTN) means that a rare tumor, which starts in pregnancy-related tissue, has spread to distant parts of the body beyond the lungs. GTN is a type of gestational trophoblastic disease that is usually cancerous. Treatment depends on the tumor type, how far it has spread, and other factors. This stage indicates advanced disease requiring careful medical care.

Stage IV HPV-negative oropharyngeal cancer is an advanced cancer that starts in the middle part of the throat (oropharynx) and is not linked to human papillomavirus (HPV) infection. It is diagnosed through exams and tests of the mouth and throat. Treatment and outlook depend on the cancer’s spread, the person’s health, and other factors like smoking history. Patients may want to ask their care team how this diagnosis applies to their situation.

Stage IV HPV-positive oropharyngeal cancer is an advanced cancer that started in the middle part of the throat and has spread to other parts of the body. It is linked to infection with human papillomavirus (HPV), which affects treatment and outlook. Diagnosis involves exams and tests of the mouth and throat. Treatment depends on the cancer’s stage, the patient’s health, and aims to preserve speaking and swallowing abilities.

Stage IV intrahepatic bile duct cancer means the cancer has spread beyond the liver to other parts of the body, such as bones, lungs, distant lymph nodes, or the lining of the abdomen. This stage indicates advanced disease. Patients and caregivers should discuss with their care team what this stage means for their individual situation, as treatment and outlook can vary.

Stage IV intraocular melanoma of the ciliary body and choroid is an advanced eye cancer where melanoma cells have spread beyond the eye. It may involve nearby lymph nodes, the eye socket, or other parts of the body like the liver or lungs. Understanding this term helps patients and caregivers discuss diagnosis and treatment options with their care team.

Stage IV kidney cancer, also called stage IV renal cell cancer, means the cancer has spread beyond the kidney to nearby tissues or distant parts of the body like bones, lungs, or liver. This stage indicates advanced disease and helps guide treatment decisions. Understanding this term can help patients and caregivers discuss care options and next steps with their healthcare team.

Stage IV leiomyosarcoma of the uterus is an advanced form of a rare cancer that starts in the muscles of the uterus. At this stage, the cancer has spread beyond the uterus to nearby organs like the bladder or rectum (stage IVA) or to distant parts of the body (stage IVB). Treatment and outlook depend on many factors, including overall health and whether the cancer is new or has returned.

Stage IV malignant pleural mesothelioma means the cancer has spread beyond the lining of one lung to other parts of the body, such as the other lung, lymph nodes, bones, or liver. Knowing the stage helps doctors plan treatment. It’s important to discuss what this stage means for each person’s care, rather than focusing on the term alone.

Stage IV medullary thyroid cancer is an advanced form of thyroid cancer that starts in special cells called C cells. It means the cancer has spread beyond the thyroid to nearby tissues, lymph nodes, or other parts of the body. Family members may be tested for inherited risks. Understanding this stage helps guide treatment and care decisions tailored to each person.

Stage IV melanoma means that melanoma cancer cells have spread from the original skin site to other parts of the body, such as the lungs, liver, brain, bones, or distant lymph nodes. This stage is determined by tests and biopsy results. Understanding what Stage IV means for one person requires talking with the care team, as it guides treatment and outlook but is not a diagnosis by itself.

Stage IV Merkel Cell Carcinoma means the cancer has spread beyond the original skin tumor to distant parts of the body, such as other skin areas, lymph nodes, or organs like the liver, lungs, bones, or brain. It is important to understand this stage in context and discuss with your care team what it means for your individual diagnosis and treatment options.

Stage IV Mycosis Fungoides/Sézary Syndrome is an advanced form of a rare type of skin lymphoma where cancerous T-cells affect the skin and may spread to the blood, lymph nodes, or other organs. It often causes widespread red, itchy skin and may involve cancer cells in the blood. Diagnosis involves skin and blood tests, and treatment options vary based on the extent of disease.

Stage IV nasopharyngeal cancer is an advanced form of cancer that starts in the nasopharynx, the upper part of the throat behind the nose. At this stage, the cancer has spread beyond the original site to nearby tissues, lymph nodes, or distant parts of the body. Symptoms may include trouble breathing, hearing problems, or lumps in the neck. Diagnosis involves exams and tests of the nose, throat, and nearby areas to guide treatment decisions.

Stage IV non-small cell lung cancer (NSCLC) means the cancer has spread beyond the lungs to other parts of the body. Symptoms may include a persistent cough, chest pain, trouble breathing, weight loss, and fatigue. Diagnosis involves imaging tests and biopsies. Treatment options vary and can include chemotherapy, radiation, targeted therapy, and immunotherapy. It’s important to discuss what this stage means for each person with their healthcare team.

Stage IV nonmelanoma skin cancer on the eyelid means that a basal cell carcinoma or squamous cell carcinoma has spread beyond the eyelid to other parts of the body. Treatment depends on the cancer type, how far it has spread, tumor size, location, and the patient’s overall health. It’s important to discuss what this stage means personally with your care team.

Stage IV nonmelanoma skin cancer on the head and neck (not on the eyelid) refers to advanced basal cell carcinoma or squamous cell carcinoma that has spread beyond the skin to nearby tissues, bones, or lymph nodes. Treatment depends on cancer type, size, spread, and overall health. It’s important to discuss what this stage means for you with your care team.

Stage IV ovarian borderline tumor is a condition where abnormal cells in the ovary have spread beyond the abdomen to other parts of the body. Symptoms may include pain or swelling in the abdomen. Diagnosis involves tests that examine the ovaries, and treatment options depend on factors like tumor size, spread, and overall health. This tumor is also called stage IV ovarian low malignant potential tumor.

Stage IV ovarian epithelial, fallopian tube, and primary peritoneal cancer means that cancer cells have spread beyond the abdomen to other parts of the body. These cancers start in similar tissues and are treated similarly. Treatment depends on the stage and may include surgery and other therapies. If you see this term, ask your care team how it applies to your specific situation.

Stage IV ovarian germ cell tumor means cancer that started in the egg cells of the ovary has spread beyond the abdomen to other parts of the body. This advanced stage may involve cancer cells in fluid around the lungs or in organs and lymph nodes outside the abdomen. Understanding this term helps patients and caregivers discuss diagnosis and treatment options with their care team.

Stage IV ovarian low malignant potential tumor, also called stage IV ovarian borderline tumor, means abnormal cells on the ovary have spread beyond the abdomen to other parts of the body. Symptoms may include abdominal pain or swelling. Diagnosis involves exams and imaging tests. Treatment and outlook depend on tumor spread, size, cell type, and overall health. Comparing terms in reports helps avoid confusion.

Stage IV pancreatic cancer means the cancer has spread from the pancreas to other parts of the body, such as the liver or lungs. It is often hard to detect early because symptoms may not appear or can be like other illnesses. Treatment options depend on the cancer’s spread and the patient’s health, and may include chemotherapy, radiation, or supportive care.

Stage IV papillary and follicular thyroid cancer in people 55 years and older refers to advanced thyroid cancers that have spread beyond the thyroid gland. These well-differentiated cancers can often be treated and sometimes cured. Understanding the stage helps guide treatment decisions and discussions with your care team about what it means for you or your loved one.

Stage IV penile cancer means the cancer has spread beyond the penis to nearby tissues like the scrotum or prostate, lymph nodes in the groin or pelvis, or even to distant parts of the body such as the lungs or liver. Understanding this stage helps doctors plan the best treatment. Patients should discuss what this stage means for their individual case with their care team.

Stage IV perihilar bile duct cancer is an advanced form of cancer that starts in the bile ducts near where they exit the liver. At this stage, the cancer has spread to many nearby lymph nodes or to other parts of the body. Understanding this stage helps doctors plan treatment and care. Patients should discuss what this means for their individual situation with their healthcare team.

Stage IV prostate cancer means the cancer has spread beyond the prostate gland. It may have reached nearby tissues or organs, lymph nodes, or distant parts of the body like bones. This advanced stage often causes symptoms such as persistent pain or tiredness. Treatment and outlook depend on many factors, including how far the cancer has spread and the patient’s overall health.

Stage IV renal cell cancer, also called stage IV kidney cancer, means the cancer has spread beyond the kidney to nearby tissues or distant parts of the body like bones, lungs, or liver. This advanced stage helps guide treatment decisions and discussions about care options with your healthcare team. It may also appear under related names such as Stage IV Kidney Cancer.

Stage IV Stomach Cancer, also called Stage IV Gastric Cancer, means the cancer has spread from the stomach to other parts of the body such as the lungs, liver, or distant lymph nodes. This is the most advanced stage of stomach cancer. Knowing the stage helps doctors plan treatment and understand what to expect. If you see this term in your medical records, ask your care team what it means for your specific situation.

Stage IV thymoma is an advanced form of thymoma, a rare cancer that starts in the thymus gland in the chest. At this stage, the cancer has spread beyond the thymus to nearby areas around the lungs and heart or to distant parts of the body through the blood or lymph system. Treatment options may include surgery, radiation, targeted therapies, and clinical trials, depending on the spread and patient health.

Stage IV transitional cell cancer of the renal pelvis and ureter means the cancer has spread beyond its original site to nearby organs, fat around the kidney, lymph nodes, or distant parts of the body like the lungs, liver, or bones. This term helps describe how far the cancer has grown and can guide treatment decisions. Patients should discuss what this means for their specific case with their care team.

Stage IV vaginal cancer means the cancer has spread beyond the vagina to nearby organs or distant parts of the body. Treatment choices depend on factors like the cancer’s size, type of cells, previous treatments, and whether the uterus is still present. Symptoms may include pain or unusual vaginal bleeding, but diagnosis requires tests to see how far the cancer has spread.

Stage IV vulvar cancer means the cancer has spread beyond the vulva to nearby bones, lymph nodes that cannot be moved or have ulcers, or to distant parts of the body. It is the most advanced stage and is divided into IVA and IVB, depending on how far the cancer has spread. Understanding this stage helps guide treatment decisions and care planning.

Stage IV Wilms tumor means that Wilms tumor, a kidney cancer most common in young children, has spread beyond the kidney to other parts of the body such as the lungs, liver, bones, brain, or lymph nodes outside the abdomen and pelvis. This stage indicates advanced disease and helps doctors plan treatment and care.

Stage IVA Anaplastic Thyroid Cancer means the cancer is found only in the thyroid gland, but the tumor can be any size. This is a rare and aggressive type of thyroid cancer. Patients with this diagnosis often have molecular testing to check for specific gene changes, like mutations in the BRAF gene. Understanding the stage helps guide treatment and care decisions.

Stage IVA hypopharyngeal cancer is an advanced form of cancer found in the lower part of the throat (hypopharynx). At this stage, the tumor has spread to nearby tissues like cartilage, muscles, or lymph nodes in the neck. Symptoms may include a persistent sore throat or ear pain. Treatment options and outlook depend on many factors, so it’s important to discuss what this stage means for each person with the care team.

Stage IVA laryngeal cancer means the cancer has grown beyond the larynx (voice box) into nearby tissues or lymph nodes. It may affect the thyroid cartilage, neck tissues, or nearby organs. This stage helps doctors decide treatment options and understand the outlook. Patients should discuss what this stage means for their specific case with their care team.

Stage IVA lip and oral cavity cancer is an advanced form of cancer where the tumor is large or has spread to nearby areas such as jawbone, skin of the face, or lymph nodes. Treatment depends on tumor size, location, and patient health, often involving surgery and radiation. Patients with this cancer have a higher risk of developing a second cancer in the head or neck.

Stage IVA maxillary sinus cancer means the cancer has spread beyond the maxillary sinus to nearby areas such as the eye, cheek skin, or nearby bones, and may involve certain lymph nodes in the neck. It is part of stage IV, which is divided into IVA, IVB, and IVC. Treatment and outlook depend on the exact spread, tumor size, cancer type, and overall health. Patients should discuss what this stage means for their individual case with their care team.

Stage IVA nasal cavity and ethmoid sinus cancer is an advanced form of cancer that has spread beyond the nasal cavity or ethmoid sinus to nearby areas such as the eye, skin of the nose or cheek, parts of the skull, or lymph nodes. Treatment and outlook depend on tumor size, location, spread, cancer type, and patient health. It’s important to discuss what this stage means for each individual with the care team.

Stage IVA salivary gland cancer means the cancer has spread beyond the salivary gland to nearby tissues like skin, jawbone, or facial nerve, and may involve nearby lymph nodes. Treatment and outlook depend on tumor size, cancer cell type, and overall health. It’s important to discuss what this stage means personally with your care team.

Stage IVB Anaplastic Thyroid Cancer is an advanced form of thyroid cancer where the tumor may be any size and has spread to nearby tissues such as muscles, soft tissues, or lymph nodes in the neck. This type of cancer grows quickly and is less common. Molecular testing, including checking for BRAF gene mutations, is important to guide treatment options. Patients should discuss what this stage means for their individual care with their medical team.

Stage IVB hypopharyngeal cancer is an advanced form of cancer in the lower part of the throat, often found late because early symptoms are rare. At this stage, the tumor may be any size and has spread to nearby tissues such as cartilage, bone, thyroid gland, or lymph nodes. Treatment and outlook depend on many factors, including overall health and whether the cancer has spread further.

Stage IVB laryngeal cancer is an advanced form of cancer in the voice box area where the tumor has spread to nearby tissues or lymph nodes in the neck. It may affect the vocal cords and surrounding areas, making voice and breathing more difficult. Diagnosis and treatment depend on tests that check how far the cancer has spread and the patient’s overall health.

Stage IVB lip and oral cavity cancer means the cancer has spread to nearby lymph nodes in a way that is more advanced, such as larger lymph nodes or spread into nearby tissues. Treatment depends on the tumor’s size, location, and the patient’s health. People with this cancer have a higher risk of developing another cancer in the head or neck area.

Stage IVB maxillary sinus cancer is an advanced form of cancer that affects the maxillary sinuses, the air-filled spaces in the cheekbones near the nose. At this stage, the cancer may have spread to nearby areas such as behind the eye, the brain, or lymph nodes in the neck. Treatment and outlook depend on many factors, so it’s important to discuss what this stage means for each individual with the healthcare team.

Stage IVB nasal cavity and ethmoid sinus cancer is an advanced form of cancer that has spread beyond the nasal cavity or ethmoid sinus to nearby areas such as behind the eye, brain, or lymph nodes in the neck. Treatment and outlook depend on many factors, so it’s important to discuss what this stage means for each person with their care team.

Stage IVB salivary gland cancer means the cancer has spread beyond the salivary gland to nearby tissues or lymph nodes. The tumor can be any size and may involve areas like the skin, jawbone, or facial nerve. Treatment and outlook depend on many factors, including tumor size, cancer cell type, and overall health. It’s important to discuss what this stage means for each person with the care team.

Stage IVC anaplastic thyroid cancer means the cancer started in the thyroid gland and has spread to other parts of the body, like the lungs or bones. This type of thyroid cancer grows quickly and is less common. Patients often have tests to look for specific gene changes, such as in the BRAF gene, which can help guide treatment options. Understanding the stage helps doctors plan care and discuss prognosis.

Stage IVC hypopharyngeal cancer means the cancer has spread from the hypopharynx (the lower part of the throat) to other parts of the body, such as the lungs, liver, or bones. This stage is part of a group called Stage IV, which is often found because early symptoms are rare. Treatment and outlook depend on many factors, so it’s important to discuss what this stage means for each person with the care team.

Stage IVC laryngeal cancer means the cancer has spread from the voice box (larynx) to other parts of the body, such as the lungs, liver, or bones. This stage is part of the most advanced group of laryngeal cancer stages. Understanding this stage helps guide treatment choices and care planning. Patients should discuss what this means for their individual situation with their healthcare team.

Stage IVC lip and oral cavity cancer means the cancer has spread from the lip or mouth to other parts of the body, such as the lungs, liver, or bones. Treatment depends on the cancer’s size, location, and the patient’s overall health. People with this cancer have a higher risk of developing another cancer in the head or neck area.

Stage IVC maxillary sinus cancer means the cancer started in or near the maxillary sinus (a space in the cheekbone) and has spread to distant parts of the body, like the lungs. It may also involve nearby lymph nodes. This stage indicates advanced disease, and treatment options depend on many factors. Patients should discuss what this stage means for their individual case with their care team.

Stage IVC nasal cavity and ethmoid sinus cancer means the cancer started in or near the nasal cavity or ethmoid sinus, has spread to nearby lymph nodes, and has also spread to distant organs like the lungs. This advanced stage affects treatment options and outlook. Patients should discuss what this stage means for their individual case with their care team.

Stage IVC salivary gland cancer means the cancer has spread from the salivary glands to other parts of the body, such as the lungs. Treatment and outlook depend on factors like the cancer’s size, location, cell type, and the patient’s overall health. It’s important to discuss what this stage means personally with your care team.

Stage V Wilms tumor means that cancer cells are found in both kidneys when the cancer is first diagnosed. Each kidney’s cancer is staged separately from I to IV. Wilms tumor is a kidney cancer most common in young children. Finding cancer in both kidneys at diagnosis can affect treatment decisions and monitoring.

Staging is the process doctors use to find out how much cancer is in the body and whether it has spread. It helps guide treatment decisions and understand the seriousness of the cancer. Staging often involves tests like x-rays, lab work, and scans. The most common system, called TNM, looks at tumor size, nearby lymph nodes, and spread to other parts of the body. Ask your care team what your stage means for your care.

The Staging System is a way doctors describe how much cancer is in the body and where it has spread. The most common system, called the AJCC or TNM system, looks at the size of the main tumor, whether nearby lymph nodes have cancer, and if the cancer has spread to other parts of the body. Understanding the stage helps guide treatment decisions but does not predict everything about outcomes.

Stamina is the energy and strength a person has to keep going through physical activity, stress, or illness over time. In cancer care, stamina can affect how well someone manages treatments and daily life. It’s important to understand stamina in context, as it can mean different things depending on the situation and individual health.

Standard Medical Care, also called best practice or standard therapy, means treatment widely accepted by medical experts for a specific disease. It follows proven methods designed to give the best possible outcome based on current knowledge. For patients, it’s important to understand this term in context and ask your care team how it applies to your personal treatment plan.

Standard of Care, also called best practice or standard medical care, means the treatment most doctors agree is proper and commonly use for a specific disease. It refers to therapies accepted by experts and widely used to help control or relieve cancer. For patients, it’s important to understand how this term applies to their own care by asking their healthcare team.

A Standard Operating Procedure (SOP) is a set of written instructions that explain how to do a specific task in a consistent and organized way. In cancer care, SOPs help ensure tests, treatments, and clinical trial steps are done safely and correctly every time. They guide healthcare teams to provide reliable and high-quality care.

Standard Therapy, also called best practice or standard of care, is the treatment widely accepted and used by medical experts for a specific type of cancer. It represents the usual approach doctors recommend based on current knowledge and experience. Patients should understand this term in context and discuss with their care team how it applies to their individual situation.

Stanford V is a chemotherapy combination used mainly to treat Hodgkin lymphoma. It includes several cancer-fighting drugs and was developed at Stanford University. The name may appear as Stanford V regimen or similar terms. Patients should ask their care team how this treatment applies to their specific situation rather than assuming it is a diagnosis or a fixed treatment plan.

Stanford V is a chemotherapy combination mainly used to treat Hodgkin lymphoma. It includes several cancer-fighting drugs developed at Stanford University. The name may appear as Stanford V regimen or similar terms. Patients should ask their care team how this treatment applies to their specific situation rather than assuming it is a diagnosis or a fixed treatment plan.

Starch is a carbohydrate found in many plants and common foods like potatoes, rice, corn, and wheat. It is made of sugar molecules linked together and is a major source of energy in the diet. Starch is also used in industry for things like making paper, medicine tablets, and fabric stiffeners.

Statins are medicines that lower cholesterol and certain fats in the blood by blocking an enzyme your body uses to make cholesterol. They are often prescribed to reduce the risk of heart disease. Statins are also being studied for possible roles in cancer prevention and treatment, but they are not yet standard cancer therapies. Decisions about using statins involve careful discussion between you and your healthcare team.

Statistical power is a measure used in research to show the chance that a study will detect a real difference or effect if one exists. It depends on factors like the number of participants, the way the study is designed, and the tests used. For patients, understanding statistical power helps to ask how study results apply to individual care rather than seeing it as a diagnosis or treatment advice.

Statistically significant means a result in a study or test is unlikely to have happened by chance alone. In cancer care, it helps doctors decide if a treatment effect or test result is likely real. However, it doesn’t always mean the result is important or will affect your care. Always ask your care team what statistically significant means for your personal situation.

Stature means a person’s height when standing upright. It is a simple measurement but can be part of medical discussions, especially when linked to certain genetic conditions like Bloom syndrome, which causes shorter height and increases cancer risk. If you see the term, ask your care team how it relates to your health rather than assuming it is a diagnosis or treatment.

Staurosporine is a natural compound that led to the development of midostaurin (brand name Rydapt), a targeted cancer drug used mainly to treat certain blood cancers in adults. Midostaurin works by blocking proteins that help cancer cells grow, especially in acute myeloid leukemia (AML) with specific gene mutations and some rare mast cell diseases. It is usually given with chemotherapy and may have side effects.

Stavudine is a medicine used to treat viral infections, especially HIV. It belongs to a group called nucleoside analogs and is taken by mouth. It is usually combined with other drugs to control the virus. Stavudine is not a cure and is less commonly used today due to side effects. Patients should always discuss how this drug relates to their care with their healthcare team.

Stavzor is a medication also known as Depakene or valproic acid. It is mainly used to treat seizures, bipolar disorder, and prevent migraines. Researchers are studying Stavzor for possible use in cancer treatment because it may slow cancer cell growth and block blood vessel growth in tumors. Patients may see different names for this drug, so it’s important to ask your care team what it means for your specific situation.

Sexually transmitted diseases (STDs), also called sexually transmitted infections (STIs), are infections passed from one person to another through sexual contact, including vaginal, anal, or oral sex. Some infections may not cause symptoms but can still be spread. Common STDs include HPV, HIV, chlamydia, gonorrhea, and syphilis. Untreated infections may lead to serious health problems. Using condoms and safer sex practices can reduce the risk.

Stellate means star-shaped and is a term used in medicine to describe various structures like cells, nerves, veins, or wounds that have a star-like shape. If you see this word in your medical notes or reports, it’s important to ask your care team what it means for your specific situation rather than assuming it refers to a diagnosis or treatment.

Stem cells are special cells in the body that can develop into many different types of cells. They help repair and replace damaged tissues. In cancer care, stem cells are important because they can be used in treatments like bone marrow or stem cell transplants to help restore healthy blood cells after chemotherapy or radiation.

Stem cell engraftment is the process after a stem cell transplant when the new stem cells travel to the bone marrow and start making new blood cells. This usually happens within 2 to 4 weeks. The stem cells may come from the patient or a donor. Understanding engraftment helps patients and caregivers follow recovery but always ask your care team how it applies to your situation.

Stem Cell Factor (SCF), also called Kit Ligand, is a natural protein in the body that helps blood stem cells grow and develop into different types of blood cells. It works by attaching to a protein called c-KIT (CD117) on cell surfaces. SCF and c-KIT are important in normal blood cell production and may be involved in some cancers. Understanding these terms can help patients follow their care discussions.

Stem Cell Factor Receptor, also called C-Kit or CD117, is a protein found on the surface of many cells. It helps certain blood cells grow by binding to a substance called stem cell factor. Some cancers, like gastrointestinal stromal tumors and melanoma, may have higher or altered amounts of this protein. Testing for it can help doctors diagnose these cancers and plan treatment.

Stem cell mobilization is a process where medicines help move special blood-forming stem cells from the bone marrow into the bloodstream. These cells can then be collected and saved for a treatment called an autologous stem cell transplant, which uses a patient’s own cells after intensive cancer therapy. This process supports certain cancer treatments but is not a cancer treatment by itself.

Stem Cell Regeneration Therapy is an experimental approach discussed in cancer care that involves supplements, drugs, botanicals, or biologics aimed at supporting immune function, reducing inflammation, improving metabolism, relieving symptoms, or directly targeting cancer. It is not a standard treatment and should be carefully reviewed with healthcare providers before use.

Stem Cell Rescue, also called Rescue Transplant, is a treatment that replaces blood-forming stem cells damaged by high doses of chemotherapy or radiation. It helps the bone marrow recover and make healthy blood cells. This procedure may allow doctors to give stronger cancer treatments to kill more cancer cells. Usually, a patient’s own stem cells are collected before treatment and given back afterward.

A stem cell transplant is a treatment that replaces blood-forming stem cells destroyed by high-dose chemotherapy or radiation. These healthy stem cells can come from your own body, a donor, an identical twin, or umbilical cord blood. This procedure helps your body rebuild blood cells after intense cancer treatments but may cause both short- and long-term side effects.

Stemgen, also known as Ancestim, r-metHuSCF, or recombinant human methionyl stem cell factor, is a lab-made protein that helps blood stem cells grow and develop into different types of blood cells. It is being studied as a possible treatment for blood disorders like myelodysplasia but is not yet a standard cancer treatment.

A stent is a small tube placed inside a blocked or narrowed body passage to keep it open. In cancer care, stents are often used to relieve symptoms when tumors block parts of the digestive tract or airways. They help improve comfort and function but are usually part of supportive care rather than a cure. Patients should ask their care team how a stent fits into their specific treatment plan.

Stereotactic Ablative Body Radiation Therapy (SABR), also called SBRT, is a precise type of external radiation treatment that targets tumors in the body outside the brain. It uses special equipment to carefully aim radiation, delivering high doses in a few sessions while protecting nearby healthy tissue. Patients may see different names for this treatment, so it’s important to ask your care team how it applies to your plan.

A stereotactic biopsy is a procedure that uses computer imaging and 3D scans to precisely locate a tumor or abnormal area and guide the removal of tissue for testing under a microscope. It helps doctors find and sample tissue that may not be felt or seen easily. Patients should ask their care team how this test fits their personal situation rather than assuming it means a diagnosis or treatment plan.

Stereotactic Body Radiation Therapy (SBRT), also called SABR or stereotactic ablative body radiation therapy, is a precise type of external radiation treatment that targets tumors in the body outside the brain. It uses special equipment to carefully aim high doses of radiation in a few sessions, helping protect nearby healthy tissue. Patients may see different names for this treatment, so it’s important to ask your care team how it applies to your plan.

A stereotactic core needle biopsy is a procedure that uses special x-ray images to guide a needle and remove a small tissue sample from an area that cannot be felt or seen clearly. This sample is then checked under a microscope to look for signs of cancer or other diseases. It is often used for areas like the breast, lung, liver, or brain.

Stereotactic External-Beam Radiation Therapy (also called stereotactic radiation therapy or stereotaxic radiation therapy) is a precise form of external radiation treatment. It uses special equipment to carefully position the patient and deliver focused radiation beams directly to a tumor, often in the brain or lungs, while minimizing exposure to nearby healthy tissue.

Stereotactic injection is a medical procedure that uses computer guidance and 3D imaging to deliver anticancer drugs directly into a tumor. It helps target treatment precisely, often in hard-to-reach areas. Patients should discuss with their care team how this procedure fits their specific situation rather than assuming it is a diagnosis or standard treatment.

A stereotactic procedure uses special equipment and imaging to precisely locate an abnormal area in the brain, breast, lung, or liver. It helps doctors take a tissue sample or deliver targeted radiation directly to a tumor. This approach aims to treat or diagnose cancer with accuracy while minimizing damage to nearby healthy tissue. The term may also appear as stereotaxic procedure, so checking the exact wording in your medical information can help avoid confusion.

Stereotactic radiation therapy (SRT) is a precise type of external radiation treatment that uses special equipment to carefully position the patient and deliver focused radiation beams directly to a tumor. It is often used for brain tumors and certain cancers in the lungs or liver, aiming to target the tumor while protecting nearby healthy tissue.

Stereotactic radiosurgery is a precise form of radiation treatment that delivers a single, high dose of radiation to a tumor or abnormal area, often in the brain. It uses special equipment to target the area carefully, aiming to treat tumors or brain disorders that cannot be removed by regular surgery. It is also called radiation surgery, radiosurgery, or stereotaxic radiosurgery.

A stereotaxic (or stereotactic) procedure uses special imaging and equipment to precisely locate an abnormal area in organs like the brain, breast, lung, or liver. It helps doctors take a small tissue sample or deliver focused radiation directly to a tumor. This technique aims to diagnose or treat cancer accurately while protecting nearby healthy tissue. If you see this term, ask your care team how it applies to your specific situation.

Stereotaxic radiation therapy (SRT), also called stereotactic external-beam radiation therapy, is a precise form of external radiation treatment. It uses special equipment to carefully position the patient and deliver focused radiation beams directly to a tumor, often in the brain or lungs, while minimizing exposure to nearby healthy tissue. It may also appear under related names such as Stereotactic External-Beam Radiation Therapy, Stereotactic Radiation Therapy.

Stereotaxic radiosurgery, also called radiation surgery or radiosurgery, is a precise radiation treatment that delivers a single, high dose of radiation to a tumor or abnormal area, often in the brain. It uses special equipment to target the area carefully without cutting into the body. This treatment is used when regular surgery is not an option and is being studied for other cancers.

Sterile means free from germs or unable to produce children. In cancer care, sterile often refers to tools or environments kept germ-free to prevent infection. It can also describe a medical condition where a person cannot have children naturally. Understanding this term helps patients recognize its use in treatment safety and fertility discussions.

Sterile Talc Powder is a medicine made from a mineral called talc, used to prevent fluid buildup around the lungs caused by cancer. It is given through a tube into the space between the lung and chest wall, where it helps close this space to stop fluid from returning. This treatment can ease breathing problems caused by fluid buildup and is approved for this use.

Steritalc, also known as Sclerosol Intrapleural Aerosol or Sterile Talc Powder, is a medicine made from talc used to prevent fluid buildup around the lungs caused by cancer. It is given through a tube into the space between the lung and chest wall, where it helps close this space to stop fluid from returning. This treatment can ease breathing problems and is approved for this use.

The sternum, also called the breastbone, is a long, flat bone located in the center front of your chest. It connects to the collarbone and the first seven ribs, forming part of the chest wall. This bone helps protect important organs like the heart and lungs and is often mentioned in cancer care when describing tumors or treatments near the chest area.

Steroids are natural or man-made substances that include hormones like testosterone and cortisol. In medicine, steroids are used to reduce inflammation, treat immune system problems, and manage symptoms of some cancers. There are different types, such as corticosteroids and anabolic steroids, each with specific uses and possible side effects. Patients should discuss with their care team how steroids relate to their treatment or health condition.

Steroid cream is a skin treatment that contains medicine to reduce swelling, itching, and inflammation. It is often used to help soothe irritated or inflamed skin, including skin problems that may happen during cancer care. Steroid creams are applied directly to the skin and can help improve comfort and healing.

Steroid drugs are medicines that reduce swelling and inflammation. Beclomethasone is one type of corticosteroid being studied to treat graft-versus-host disease (GVHD), a condition that can happen after some cancer treatments like stem cell transplants. Steroids may also affect tumors or hormone levels. It’s important to ask your care team how steroid drugs relate to your specific situation rather than assuming their meaning alone.

A steroid metabolism gene is a gene that helps the body make or break down steroids, such as hormones and cholesterol. One gene called CYP17 is being studied in breast, ovarian, and uterine cancers. If you see this term, it’s important to ask your care team what it means for your specific situation rather than assuming it is a diagnosis or treatment plan.

Steroid therapy uses corticosteroid drugs to reduce swelling, pain, and inflammation. In some conditions like severe alcoholic hepatitis, doctors use a scoring system called the Lille Model after 7 days of steroid treatment to see if the therapy is working. This helps identify patients who may not benefit from continued steroids and who might need other treatments.

Stewart-Treves syndrome is a rare cancer that can develop in people who have long-term swelling (lymphedema), often after breast cancer surgery that removed lymph nodes. It involves a type of tumor called angiosarcoma, which starts in blood vessels. Early signs include persistent swelling and reddish-blue skin spots or lumps. If you hear this term, ask your care team what it means for your specific situation.

STI stands for sexually transmitted infection, also known as sexually transmitted disease (STD). These infections are caused by bacteria, viruses, or other germs passed through sexual contact or body fluids. Symptoms can vary or be absent. Some STIs, like HPV, can affect cancer risk. If you see this term in your care, ask your healthcare team what it means for you personally.

STI571, also known as Gleevec, imatinib mesylate, or Imkeldi, is a targeted cancer drug used to treat certain blood cancers, gastrointestinal stromal tumors, and some rare conditions. It works by blocking proteins that help cancer cells grow, helping to slow or stop cancer growth. Patients may see different names for this drug in medical reports or prescriptions.

Stivarga, also called regorafenib, is a pill used to treat certain cancers like colorectal cancer, gastrointestinal stromal tumors, and some liver cancers. It works by blocking proteins that help cancer cells grow and form new blood vessels. Stivarga can cause side effects such as tiredness, loss of appetite, diarrhea, and skin changes, and requires careful monitoring because it may cause serious liver problems.

A stoma is a surgically created opening that connects an area inside the body to the outside. It is often made to help waste leave the body when normal routes are not possible. If you see the word “stoma” in your care, ask your medical team how it applies to your situation, as it is not a diagnosis or treatment by itself.

The stomach is a hollow organ in the digestive system that helps break down food using digestive juices. It is located between the esophagus and the small intestine. Stomach cancer starts in the cells lining the stomach and can be hard to detect early because symptoms like indigestion and stomach pain are common in many conditions. Understanding the stomach’s role and related cancers can help patients and caregivers ask informed questions about diagnosis and treatment.

The Stomach Acid Stimulation Test, also called the Gastric Acid Secretion Test or Stomach Acid Test, measures how much acid your stomach produces. During the test, a thin tube is gently inserted through your nose or throat into your stomach to collect acid samples after you receive a hormone injection. This test helps doctors understand stomach function and may be used in certain stomach conditions or cancers.

The Stomach Acid Test, also called the Gastric Acid Secretion Test or Stomach Acid Stimulation Test, measures how much acid your stomach produces. During the test, a thin tube is gently inserted through your nose or throat into your stomach to collect acid samples after a hormone injection. This test helps doctors understand stomach function and may be used in certain stomach conditions or cancers.

Stomach cancer, also called gastric cancer, is a disease where harmful cells grow in the lining of the stomach. It can cause symptoms like stomach pain, nausea, and weight loss. Infection with a bacteria called Helicobacter pylori is a common risk factor. Doctors carefully watch for stomach cancer in people with stomach problems or risk factors to help with early diagnosis and treatment.

Stomatitis is inflammation or irritation of the lining inside the mouth. It often causes painful sores or ulcers, commonly called canker sores. This condition can happen for many reasons, including side effects of cancer treatments, nutritional deficiencies, or irritation from toothpaste. While usually not contagious, stomatitis can make eating and drinking uncomfortable and may need care to manage symptoms.

Stool, also called feces, is the material your body passes as a bowel movement. It contains undigested food, bacteria, mucus, and cells from your intestines. Stool tests and related procedures like colonoscopy help doctors find causes of symptoms such as bleeding, diarrhea, or abdominal pain and screen for colon polyps or cancer.

The Stool Guaiac Test, also called the guaiac fecal occult blood test (gFOBT), is a simple test that checks for hidden blood in stool samples. It uses a chemical called guaiac to detect blood that cannot be seen with the naked eye. Finding blood in stool can help screen for colorectal cancer or other conditions like polyps or hemorrhoids. This test is often done at home and sent to a lab for results.

A stool test is a simple lab test that checks your bowel movement for hidden (occult) blood or other signs that might suggest colon problems, including colorectal cancer. You collect a small stool sample at home using a kit and send it to a lab. Stool tests help find early signs of colon polyps or cancer, often before symptoms appear, and are part of colorectal cancer screening for adults, especially those 50 or older.

Strabismus is a condition where the eyes do not line up properly when looking at an object. One eye may look straight ahead while the other turns inward, outward, or in another direction. This can cause double vision or the brain ignoring one eye’s image, especially in children. Strabismus can be a sign of advanced nasopharyngeal cancer but also occurs for many other reasons.

Straight colorectal anastomosis is a surgery where the colon is directly connected to the remaining part of the rectum after most of the rectum is removed, often due to rectal cancer. Unlike the J-pouch procedure, no pouch is created to store stool. Patients should discuss with their care team how this surgery applies to their individual situation.

Streptavidin is a small protein from bacteria that binds very tightly to biotin (vitamin B7). In cancer care, this strong connection helps doctors link treatments like antibodies and radioactive substances to cancer cells, aiming to target tumors more precisely. Streptavidin itself is not a treatment but part of experimental approaches studied in clinical trials to improve cancer therapy.

Streptozocin is a chemotherapy drug used to treat certain types of cancer, especially tumors of the insulin-producing cells in the pancreas. It belongs to a group of drugs called alkylating agents, which work by damaging cancer cells’ DNA to stop their growth. Because it can have serious side effects, it is usually given when surgery is not an option and under close medical supervision.

Stress is the body’s natural response to physical, mental, or emotional pressure. It can cause changes like increased heart rate and feelings of anxiety or frustration. While some stress is normal, long-term stress can affect health and may need support, especially for people with cancer. Doctors often check for stress to help manage its effects during and after cancer treatment.

Stress proteins, also called heat-shock proteins (HSPs), are special proteins made by cells when they face stress like heat, infection, or low oxygen. They help protect and repair other proteins inside cells. Some stress proteins, especially HSP90, are found at higher levels in cancer cells and are being studied as targets for new cancer treatments.

A stroke happens when blood flow to part of the brain is blocked or reduced, causing brain cells to be damaged. It can cause sudden symptoms like weakness, numbness, trouble speaking, or vision problems. Managing conditions like atrial fibrillation (Afib) during cancer care helps lower stroke risk. If you see the word stroke or cerebrovascular accident (CVA), ask your care team what it means for you personally.

Stroma refers to the supportive tissues and cells that surround and give structure to organs and tissues in the body. It includes connective tissue, blood vessels, lymph vessels, and nerves. In cancer care, stroma can influence how tumors grow and spread. Understanding stroma in your medical reports is important, but it is best to ask your healthcare team how it relates to your specific situation.

Stromagen, also called Autologous Expanded Mesenchymal Stem Cells OTI-010, is a treatment using special stem cells taken from a patient’s own bone marrow and grown in a lab. These cells are given back to help rebuild bone marrow damaged by chemotherapy or radiation, supporting recovery after intense cancer treatments. It may also appear under related names such as Autologous Expanded Mesenchymal Stem Cells OTI-010.

Stromal cells are a type of connective tissue cell that support and surround other tissues and organs in the body. They are found in many places, including bone marrow and reproductive organs like the ovaries and testicles. In cancer care, stromal cells can influence how tumors grow and spread. If you see this term in your medical information, it’s important to ask your care team what it means for your specific situation.

Stromal tissue is the supportive tissue in the body that helps give structure to organs, glands, and other tissues. It includes connective tissue, blood vessels, and nerves. Stromal tissue provides nutrients, removes waste, and may play a role in the immune system. When you see this term in medical reports, it’s important to ask your care team how it relates to your specific situation.

A stromal tumor is a growth that starts in the supportive connective tissue of an organ. These tumors can occur in places like the ovaries or the gastrointestinal tract. Some stromal tumors, such as gastrointestinal stromal tumors (GIST), may have specific genetic changes that affect treatment options. If you hear this term, it’s important to ask your care team what it means for your specific situation.

Strontium is a metal that can be used in a radioactive form for imaging tests and to help treat cancer, especially bone-related conditions. Because it behaves like calcium, strontium can build up in bones. Some forms of strontium are studied for managing bone pain caused by cancer. If you see this term, it’s important to ask your care team how it relates to your specific situation.

Strontium Chloride Sr 89 is a radioactive form of the metal strontium used in a salt form that collects in growing bone. It is being studied to help relieve bone pain caused by cancer that has spread to the bones. Patients should discuss with their care team how this treatment might apply to their specific situation.

Strontium ranelate is a medication studied mainly for osteoporosis in postmenopausal women. It helps new bone tissue grow and reduces bone loss, which can lower the risk of fractures. In cancer care, it may be mentioned because of its effects on bones, but its use and meaning should always be discussed with your healthcare team to understand how it applies to your situation.

Structural racism refers to long-standing systems and policies that create unfair advantages for some racial or ethnic groups and disadvantages for others. It affects many parts of life, including where people live, work, and get health care. This can lead to differences in health outcomes, such as higher rates of illness and death in certain groups. Patients and caregivers should understand this term in context and discuss its relevance with their care team.

A study agent is a medicine, vitamin, mineral, food supplement, or combination being tested in a clinical trial. It is important for patients and caregivers to understand this term in context and discuss with their care team how it relates to their individual care, rather than seeing it as a diagnosis or treatment recommendation.

Sturge-Weber Syndrome (SWS) is a rare condition present at birth that affects the brain, skin, and eyes. It often causes a red or purple birthmark called a port-wine stain on one side of the face. People with SWS may experience seizures, glaucoma (eye pressure), and learning difficulties. Treatment focuses on managing symptoms, and it’s important to discuss what this diagnosis means for each person with their healthcare team.

SU006668, also known as Orantinib or SU6668, is a drug being studied for cancer treatment. It works by blocking proteins that help cancer cells grow and spread, and may also stop tumors from forming new blood vessels they need to survive. Patients may see this name in medical reports or treatment discussions and should ask their care team what it means for their specific situation.

SU011248, also known as SU11248, sunitinib malate, or Sutent, is a drug used to treat certain advanced cancers, including gastrointestinal stromal tumors, pancreatic neuroendocrine tumors, and kidney cancer. It works by blocking proteins that help cancer cells grow and by preventing new blood vessels from forming in tumors. Patients may see this name in medical reports or treatment plans and should ask their care team how it applies to their care.

SU101, also known as leflunomide, is a medication mainly used to treat rheumatoid arthritis and psoriatic arthritis by slowing down the immune system. It is being studied for possible use in treating certain cancers, especially tumors with a specific gene change called PTEN loss. SU101 and leflunomide are different names for the same drug, so checking the exact term in medical reports can help avoid confusion.

SU11248, also known as SU011248, sunitinib malate, or Sutent, is a cancer drug used to treat certain advanced tumors, including gastrointestinal stromal tumors, pancreatic neuroendocrine tumors, and kidney cancer. It works by blocking proteins that help cancer cells grow and by stopping new blood vessels from forming in tumors. Patients may see different names for this drug and should ask their care team how it relates to their treatment.

Semaxanib, also known as SU5416, is an experimental drug studied for cancer treatment. It works by blocking signals that help tumors grow new blood vessels. Although it showed promise in early research, clinical trials did not show enough benefit, and its development was stopped. Patients may see this name in research or medical reports and should discuss its meaning with their care team.

SU6668, also known as Orantinib or SU006668, is a drug being studied for cancer treatment. It works by blocking proteins that help cancer cells grow and spread, and may also stop tumors from forming new blood vessels they need to survive. Patients may see this name in medical reports or treatment discussions and should ask their care team what it means for their specific situation.

A subarachnoid block (SAB), also called spinal anesthesia or spinal block, is a type of regional anesthesia that temporarily numbs the lower part of the body. It involves injecting medicine into the fluid around the lower spinal cord to block pain while the patient stays awake. SAB is often used during surgeries or procedures involving the abdomen, pelvis, or legs.

Subcutaneous means beneath the skin. It often refers to injections or treatments given into the fatty layer just under the skin. Patients may learn to give these injections themselves, using clean hands and simple techniques. In cancer care, subcutaneous methods can be part of nutrition support or medication delivery. It’s important to understand how the term applies to your care by asking your healthcare team.

A subcutaneous port is a small device placed under the skin that connects to a vein. It helps deliver medicines, fluids, or draw blood easily during cancer treatment. Patients and caregivers should ask their care team how this device applies to their specific care, as the term alone doesn’t describe a diagnosis or treatment plan.

Subependymal refers to the layer of cells just beneath the ependyma, a thin membrane lining the fluid-filled spaces in the brain and spinal cord. This area is important because certain non-cancerous brain tumors, like subependymal giant cell astrocytomas, can develop here, especially in people with a genetic condition called tuberous sclerosis. Understanding this term helps patients and caregivers discuss diagnosis and treatment options more clearly with their healthcare team.

Subependymal Giant Cell Astrocytoma (SEGA) is a non-cancerous, slow-growing brain tumor that often occurs in people with tuberous sclerosis, a genetic condition causing benign growths in various organs. These tumors develop near fluid-filled spaces in the brain and are made of star-shaped cells called astrocytes. SEGA usually does not spread outside the brain but may need treatment to manage symptoms or growth.

Suberoylanilide Hydroxamic Acid, also known as SAHA, vorinostat, or Zolinza, is a cancer drug used to treat a type of skin lymphoma called cutaneous T-cell lymphoma. It works by blocking enzymes that cancer cells need to grow and divide. SAHA is approved for cases where other treatments have not worked or the cancer has returned, and it is being studied for other cancers.

The subglottis is the lowest part of the voice box (larynx), located just below the vocal cords and above the windpipe (trachea). It plays a role in breathing and voice. In cancer care, knowing if cancer involves the subglottis helps doctors plan treatment and understand symptoms. If you see this term in your medical records, ask your care team what it means for your specific situation.

Subjective improvement means feeling better based on what a patient reports, not on medical tests or observations. It reflects a patient’s own sense of health or well-being. Patients and caregivers should discuss what this means for their specific situation with their care team, rather than assuming it is a diagnosis or treatment decision on its own.

The submucosa is a layer of tissue just beneath the mucosa, the inner lining of organs like the colon or rectum. It contains blood vessels, nerves, and connective tissue. In cancer care, knowing if cancer has reached the submucosa helps doctors understand how far the cancer has spread and guides treatment decisions. If you see this term in your medical information, ask your care team what it means for your specific situation.

The subserosa is a thin layer of tissue found just beneath the outer lining (serosa) of some organs, like the stomach. It is important in cancer care because how far cancer has spread into or beyond this layer helps doctors determine the cancer’s stage and plan treatment. If you see this term in your medical records, ask your care team what it means for your specific situation.

Subset analysis is when a clinical study looks at results for only some of the patients, chosen because they share certain traits like disease stage or hormone status. For patients and caregivers, it’s important to understand these results in context and ask the care team how they apply to the individual, rather than seeing the term alone as a treatment guide or diagnosis.

A subspecialist is a doctor or healthcare provider who has extra training in a very specific area of medicine. For example, a pediatric oncologist treats cancer in children, and a neuroradiologist specializes in imaging the nervous system. When you see this term, it’s important to ask your care team how it relates to your care rather than assuming it means a diagnosis or treatment by itself.

Substance abuse means using drugs or alcohol in ways that can harm your health, emotions, or daily life. It can include using illegal drugs or misusing prescription or over-the-counter medicines. For patients and caregivers, it’s important to understand this term in context and talk with the care team about what it means for each person’s situation.

Subtenon refers to a method of delivering anesthesia around the eye, often used during outpatient eye procedures like trabeculectomy for glaucoma. It involves injecting medicine beneath Tenon's capsule, a thin membrane covering the eye muscles. Patients should understand this term in context and ask their care team how it relates to their specific care, rather than seeing it as a diagnosis or treatment by itself.

A subtotal hysterectomy, also called partial or supracervical hysterectomy, is surgery that removes the uterus but leaves the cervix in place. This procedure may be used to treat certain conditions, including some cancers. Understanding this term helps patients know which parts of the reproductive system were removed and what follow-up care might involve.

Sucralfate is a medication used to treat ulcers by forming a protective coating over the ulcer site. It is also used to help manage mucositis, which is inflammation and sores in the mouth or digestive tract. Sucralfate works by sticking to damaged areas to protect them from further irritation and promote healing. It is often taken by mouth or sometimes given as an enema for certain conditions.

Suction aspiration, also called suction evacuation or vacuum aspiration, is a surgical procedure where the cervix is gently opened and a vacuum is used to remove tissue from the uterus. It is commonly used for early pregnancy procedures, miscarriage management, or to collect tissue samples. The term may appear under different names, so it’s important to ask your care team how it applies to your specific situation.

Suction evacuation, also called suction aspiration or vacuum aspiration, is a surgical procedure where the cervix is gently opened and a vacuum device is used to remove tissue from the uterus. It is commonly used for early pregnancy care, miscarriage management, or to collect uterine tissue samples. The terms suction evacuation, suction aspiration, and vacuum aspiration all refer to the same procedure, so it’s important to ask your care team how it applies to your situation.

Sudden Infant Death Syndrome (SIDS), also called crib death, is the sudden and unexplained death of a healthy baby younger than one year old, usually during sleep. The exact cause is unknown. Risk factors include sleeping on the stomach, overheating, and exposure to tobacco smoke. Safe sleep practices can help reduce the risk.

The SUFU gene helps control cell growth and development. Changes (mutations) in this gene can lead to inherited conditions like basal cell nevus syndrome and increase the risk of certain brain cancers, such as medulloblastoma. If you see SUFU gene mentioned in your care, it’s important to ask your healthcare team what it means for you personally.

Sugar Avoidance, also called the Low-Sugar Cancer Diet, is a nutrition approach that limits sugar intake. It is discussed in cancer care for supporting nutrition, metabolism, inflammation control, digestion, immune health, and treatment tolerance. While sometimes mentioned as part of alternative cancer care, it should be reviewed with healthcare providers to ensure safety and appropriateness.

Sugar Avoidance, also called the Low-Sugar Cancer Diet, is a nutrition approach that limits sugar intake. It is discussed in cancer care to support nutrition, metabolism, inflammation control, digestion, immune health, and treatment tolerance. While sometimes mentioned as part of alternative cancer care, it should always be reviewed with healthcare providers to ensure safety and appropriateness.

Suicide means intentionally taking one’s own life. In cancer care, emotional challenges like depression or mental health conditions can increase the risk of suicide. It’s important for patients and caregivers to understand this term in context and talk openly with the healthcare team about any concerns or feelings, rather than seeing the word alone as a diagnosis or treatment plan.

Sulfa drugs, also called sulfonamides, are a group of antibiotics used to treat infections. These drugs have a long history in medicine and may appear under different names in medical reports. For patients and caregivers, it’s important to understand the term in context and ask the care team how it relates to individual care, rather than assuming it refers to a specific diagnosis or treatment.

Sulfonamides, also called sulfa drugs, are a family of medicines originally used as antibiotics. Some sulfonamide drugs are now being studied as experimental treatments for cancer. These drugs work by blocking enzymes cancer cells need to grow and divide. Sulfonamide drugs like ABT-751 and Chloroquinoxaline Sulfonamide (CQS) are not yet approved and are usually available only through clinical trials.

A Sulforaphane-Rich Diet focuses on foods high in sulforaphane, a compound found in certain vegetables like broccoli. It is discussed in cancer care for its potential effects on nutrition, inflammation, immune support, digestion, and treatment tolerance. Patients should talk with their care team before making changes, as its role in cancer treatment or prevention is not fully proven and may vary by individual.

Sulfuric acid is a very strong and corrosive acid used mainly in industry. It is sometimes mentioned as an ingredient in unproven cancer products like Cancell. These products have not been shown to treat or prevent cancer. If you see sulfuric acid mentioned in your care, ask your healthcare team what it means for your situation rather than assuming it is a treatment or diagnosis.

Sulindac is a nonsteroidal anti-inflammatory drug (NSAID) sometimes studied for its potential to reduce growth of precancerous colon polyps, especially in people with familial adenomatous polyposis (FAP). It is not a standard cancer treatment but may have properties that affect tumor growth. Patients should always ask their healthcare team how sulindac relates to their specific care rather than assuming it is a diagnosis or treatment recommendation.

Sun Protection Factor (SPF) is a number on sunscreen products that shows how well they protect your skin from sunburn caused by ultraviolet (UV) rays. Higher SPF numbers mean more protection. Sunscreens with SPF 30 or higher offer strong protection. Using sunscreen with SPF, along with other sun safety steps, helps reduce skin damage and lower the risk of skin cancer. Always ask your care team how SPF relates to your personal skin health.

Sun’s Soup is a mixture of vegetables and herbs studied as a complementary approach in cancer care. It includes ingredients like shiitake mushrooms, mung beans, garlic, and ginseng. While some small studies suggest it might help improve quality of life when used alongside standard treatments, it is not approved by the FDA as a cancer treatment. Patients should discuss its use with their care team to understand what it means for their care.

Sunfood or Breatharian-Adjacent Diets are nutrition approaches sometimes discussed in cancer care. They focus on supporting nutrition, metabolism, inflammation, digestion, immune function, and treatment tolerance. While sometimes promoted as alternative cancer treatments, strong claims about curing cancer or replacing standard care lack solid evidence. Patients should discuss these diets with their healthcare team before use.

Sunfood or Breatharian-Adjacent Diets are nutrition approaches sometimes discussed in cancer care. They focus on supporting nutrition, metabolism, inflammation, digestion, immune function, and treatment tolerance. While sometimes promoted as alternative cancer treatments, strong claims about curing cancer or replacing standard care lack solid evidence. Patients should discuss these diets with their healthcare team before use.

Sunitinib malate, also known as SU011248, SU11248, or by its brand name Sutent, is a medicine used to treat certain adult cancers. It works by blocking proteins that help cancer cells grow and by stopping tumors from making new blood vessels they need to survive. It is used for some gastrointestinal stromal tumors, pancreatic neuroendocrine tumors, and kidney cancer.

Sunscreen is a lotion, cream, or gel that helps protect your skin from the sun’s harmful ultraviolet (UV) rays. Using sunscreen properly can reduce the risk of sunburn, skin damage, premature aging, and some types of skin cancer. It is important to use sunscreen along with other sun safety measures like wearing protective clothing and avoiding strong midday sun.

Sunshine is the natural light and warmth from the sun that helps the body make vitamin D. While too much sun can increase skin cancer risk, moderate sun exposure supports vitamin D production, which may protect against several internal cancers. Patients should discuss how sunshine relates to their health with their care team rather than making decisions based on fear or misinformation.

Superficial means affecting only the surface layers of the skin or tissue. In cancer care, it often describes skin conditions like actinic keratosis or certain basal cell skin cancers that stay on the outer skin layers. These conditions may be treated with topical creams such as Carac or Aldara, which offer non-surgical options for early or surface-level skin changes.

Superfractionated Radiation Therapy, also called Hyperfractionated Radiation Therapy, is a way of giving radiation treatment where the total dose is divided into smaller doses given more than once a day. It is delivered over the same overall time period as standard radiation therapy. Patients should ask their care team how this approach fits their specific treatment plan.

The superior vena cava is a large vein that carries blood from the head, neck, arms, and chest back to the heart. In cancer care, it can be affected by tumors pressing on or blocking it, which may cause swelling and breathing difficulties known as superior vena cava syndrome. This entry helps connect the word with diagnoses, testing, treatments, supportive care, research notes, protocols, media, books, people, organizations, and safety concerns.

Superior vena cava syndrome (SVCS) happens when a tumor presses on the superior vena cava, a large vein that carries blood from the head, neck, arms, and chest back to the heart. This pressure can cause swelling in the face, neck, and arms, along with breathing difficulties and coughing. SVCS is often linked to cancers in the chest and may require treatments like chemotherapy, radiation, or procedures to open the vein.

Supplemental health insurance is extra coverage offered by private companies approved by Medicare. It helps pay for healthcare costs that your regular insurance may not cover, such as copayments, deductibles, or prescription drugs. This type of insurance can include plans for vision, dental, hospital care, or specific conditions like cancer. It’s important to understand how supplemental insurance fits with your overall coverage and to ask your care team how it applies to your situation.

Supplemental nutrition means adding vitamins, minerals, protein, or fats to a person’s diet to help meet their nutritional needs. It can be given by mouth, through a feeding tube, or directly into a vein. For patients and caregivers, it’s important to understand how supplemental nutrition fits into individual care rather than seeing it as a diagnosis or treatment on its own.

Supplemental Oxygen Therapy, also called Oxygen Therapy, is a treatment that provides extra oxygen to help people breathe better when their blood oxygen levels are low. It is used for conditions like lung disease, heart failure, or severe infections. Oxygen is given through tubes or masks and can be used short-term or long-term. Always ask your care team how it applies to your situation.

Supplementation means adding nutrients to your diet, often through vitamins or minerals. During cancer treatment, some patients may need supplements like vitamin B12 or folate to support nutrition and manage symptoms. It’s important to talk with your care team before starting supplements, as needs vary and supplements are not cancer treatments by themselves.

A support group is a gathering of people who share similar health concerns or life challenges, such as cancer, to offer each other emotional support, share experiences, and exchange helpful information. These groups can be in-person or online and provide a sense of community and understanding during difficult times. This entry helps connect the word with diagnoses, testing, treatments, supportive care, research notes, protocols, media, books, people, organizations, and safety concerns.

Supportive care is treatment given alongside cancer therapies to help manage symptoms and side effects, improving quality of life from diagnosis through the end of life. It includes physical, emotional, social, and spiritual support for patients and families. Supportive care focuses on relieving symptoms rather than curing the disease itself.

A suppository is a small, solid medicine that melts or dissolves inside the body when placed in the rectum, vagina, or urethra. It delivers medication either locally or into the bloodstream. Suppositories are often used when swallowing pills is difficult or when a medicine needs to work quickly or directly in a specific area.

Supprelin LA is a hormone therapy implant containing histrelin acetate, used to treat early puberty in children by lowering sex hormone levels over time. It works by first increasing, then decreasing hormones that control testosterone and estrogen. Patients and caregivers should discuss with their care team how Supprelin LA applies to their specific situation rather than assuming a diagnosis or treatment plan from the name alone.

Suppressor T cells, also called regulatory T cells or T regs, are a type of white blood cell that helps control the immune system. They act like a natural brake, preventing the immune system from overreacting and causing damage. These cells are important in cancer care because they can affect how the immune system responds to cancer. If you see this term, ask your care team what it means for your specific situation.

A supracervical hysterectomy, also called partial or subtotal hysterectomy, is surgery that removes the uterus but leaves the cervix in place. This procedure may be used to treat certain conditions, including some cancers. Knowing this term helps patients understand which parts of the reproductive system were removed and what follow-up care might involve.

Supraclavicular lymph nodes are small, bean-shaped immune system parts located just above the collarbone. Doctors often check these nodes to see if cancer has spread beyond its original site. Not all enlarged lymph nodes here mean cancer, as infections or other causes can also make them noticeable. Understanding this term can help you ask your healthcare team important questions about your diagnosis and treatment.

A supraglottic laryngectomy is a surgery that removes the upper part of the voice box (larynx) above the vocal cords. It is a type of partial laryngectomy used in cancer care to remove cancer while trying to preserve voice and swallowing functions. Patients should discuss with their care team how this surgery fits their treatment plan and what to expect during recovery.

The supraglottis is the upper part of the larynx (voice box), including the epiglottis and the area above the vocal cords. In cancer care, it is important to understand this term in context, as cancer can develop here and affect treatment decisions. If you see this term in your medical records, ask your care team how it relates to your specific diagnosis and care plan.

The suprarenal glands, also called adrenal glands, are two small, triangle-shaped organs located on top of each kidney. They produce important hormones like adrenaline and steroids that help control heart rate, blood pressure, stress response, and other body functions. Rare tumors can develop in these glands, making them important in cancer diagnosis and treatment.

The supratentorium is the upper part of the brain that includes important areas like the cerebrum and several glands. Certain brain tumors, such as glioblastomas and ependymomas, often develop in this region, especially in children and young adults. Understanding where a tumor is located helps guide diagnosis and treatment decisions.

Suramin is a medicine used to treat infections caused by parasites. It is also being studied for possible use in cancer treatment. If you see this term, it’s important to ask your care team how it relates to your specific situation rather than assuming it is a cancer diagnosis or treatment recommendation.

A surface electrode is a small device placed on the skin to measure or stimulate electrical activity in muscles and nerves. It helps doctors check how well muscles and nerves are working. If you see this term, it’s important to ask your care team what it means for your specific situation, rather than assuming it is a diagnosis or treatment by itself.

A surgeon is a doctor who performs operations to remove or repair parts of the body. In cancer care, surgeons play a key role in diagnosis, treatment planning, and surgery, such as removing tumors or reconstructing the breast after mastectomy. Your surgeon and care team can explain how surgery fits your overall treatment plan and health needs.

The Surgeon General is the leading medical and public health spokesperson for the United States. This person provides scientific information to help people improve health and reduce risks of illness and injury. The Surgeon General also leads the U.S. Public Health Service Commissioned Corps, a group of uniformed health professionals ready to respond to public health emergencies.

Surgery, also called an operation, is a medical procedure that involves cutting into the body to remove, repair, or examine tissue. In cancer care, surgery can be used to remove tumors, relieve symptoms, support nutrition, or help with recovery. It may also be part of diagnosis or supportive care. Surgery varies from small biopsies to major operations and should always be discussed with your healthcare team to ensure safety and coordination with other treatments.

The Whipple surgery is a common, standard treatment used by cancer specialists, mainly for certain cancers in the pancreas and nearby areas. It is a major operation that removes parts of the pancreas, intestine, and other tissues. Patients should discuss with their care team how this surgery fits their specific diagnosis and treatment plan, as it is not a one-size-fits-all approach.

A surgical biopsy, also called an open biopsy, is a procedure where a doctor makes a cut through the skin to remove abnormal tissue. This tissue is then examined under a microscope to check for diseases like cancer. There are two main types: incisional biopsy, which removes part of a lump, and excisional biopsy, which removes the entire lump or suspicious area.

Surgical castration is a treatment that involves removing both testicles to lower testosterone levels. This helps slow the growth of certain cancers, like prostate cancer. It is a permanent procedure and different from medical castration, which uses drugs to lower hormone levels temporarily. Patients should discuss with their care team how surgical castration fits into their treatment plan and what effects to expect.

Surgical excision is a procedure where doctors remove abnormal tissue from the body, often using a scalpel, laser, or other cutting tools. It is commonly done to take out lumps or suspicious growths, including abnormal cells found on the cervix. Treatments like cryotherapy, laser therapy, LEEP, or cone biopsy are examples of surgical excision methods used to remove or destroy abnormal tissue and help prevent cancer.

Surgical menopause happens when a woman’s menstrual periods stop because her ovaries are removed by surgery. This causes symptoms like hot flashes, mood swings, night sweats, vaginal dryness, trouble concentrating, and infertility. It’s important to understand surgical menopause in the context of your own health and to talk with your care team about what it means for you personally.

A surgical oncologist is a surgeon specially trained to perform operations on cancer patients. They often do biopsies and remove tumors, including those inside the chest. This term describes a type of cancer specialist, but it is important to ask your care team how it applies to your specific situation rather than assuming it means a particular diagnosis or treatment.

A surrogate endpoint is a sign or measurement used in clinical trials to suggest if a treatment might work, such as a shrinking tumor or lower blood marker levels. It is not a direct measure of how a patient feels, functions, or survives. Patients should ask their care team what a surrogate endpoint means for their specific situation rather than assuming it shows a clear benefit.

Surrogate pregnancy is when a woman carries and gives birth to a baby for someone who cannot have children, often due to cancer treatments like chemotherapy or radiation that cause infertility. The baby is created using eggs and sperm from the intended parents or donors, then implanted in the surrogate’s uterus. Surrogacy can be a way for cancer survivors to have children when pregnancy is not possible or safe for them.

Surveillance in cancer care means closely watching a patient’s health without starting treatment right away. It involves regular tests and exams to check if the cancer is changing or coming back. Treatment only begins if changes or symptoms appear. This approach helps some patients avoid or delay treatments and their side effects when the cancer is slow-growing or not causing problems.

The SEER Program is a project by the National Cancer Institute that collects and reports information about cancer cases and deaths across the United States. It provides yearly updates on cancer statistics, including details like patient age, tumor type, cancer stage, treatments, and survival. SEER data helps understand cancer trends but is not a diagnosis or treatment guide.

Survival rate is the percentage of people in a group who are still alive after a certain time following a cancer diagnosis or treatment. It often refers to the five-year survival rate, showing how many people live at least five years after diagnosis. This measure helps doctors and researchers understand how cancer and treatments affect overall survival, including deaths from any cause, not just cancer itself.

In cancer care, a survivor is anyone diagnosed with cancer who continues to live, from the time of diagnosis through the rest of their life. Survivorship includes managing health after treatment, coping with side effects, and planning follow-up care. It’s important to understand the term in context and talk with your care team about what survivorship means for you or your loved one.

Survivorship in cancer means living with, through, and beyond cancer from the time of diagnosis until the end of life. It includes managing physical, emotional, and social effects of cancer and its treatment, as well as follow-up care to monitor health, detect recurrence, and support quality of life for patients and their caregivers.

A Survivorship Care Plan is a detailed summary of your cancer treatment and a guide for your follow-up care after treatment ends. It helps you and your doctors keep track of tests, checkups, and health needs to watch for cancer returning or new health issues. Sometimes called a Follow-Up Care Plan, it also includes advice on healthy living and support services.

A susceptibility gene mutation is a change in a gene’s DNA that can increase a person’s chance of developing certain diseases, including some cancers. These mutations may be inherited from a parent or happen during life. Having such a mutation raises risk but does not mean cancer or disease is certain. Knowing about these mutations can help guide prevention, screening, and treatment decisions.

Sustiva, also known as efavirenz, is a medicine used to treat and prevent HIV infection. It works by blocking the virus from making copies of itself. Often taken with other HIV medicines, Sustiva may also be used after possible exposure to HIV. It is not a cancer treatment but may appear in medical records for patients with both HIV and cancer.

Sustol is a medicine used to prevent nausea and vomiting caused by chemotherapy. It contains granisetron, which works by blocking serotonin, a chemical that can trigger these symptoms. Sustol is a long-acting injection and is related to other forms of granisetron such as the Sancuso skin patch. It helps patients manage side effects during cancer treatment.

Sutent is a cancer medicine also known as sunitinib malate, SU011248, or SU11248. It is used to treat certain advanced cancers like gastrointestinal stromal tumors, pancreatic neuroendocrine tumors, and kidney cancer. Sutent works by blocking proteins that help cancer cells grow and by stopping tumors from making new blood vessels they need to survive.

SV40, or Simian Virus 40, is a virus originally found in some monkeys and also detected in humans. It was accidentally present in some polio vaccines given between 1955 and 1963. While SV40 can cause tumors in laboratory animals, there is no clear evidence that it causes cancer in people. SV40 has been important in scientific research to understand how viruses affect cells.

SVV-001, also called NTX-010 or Seneca Valley Virus-001, is a virus being studied as a possible treatment for certain cancers, especially neuroendocrine tumors. It is a type of oncolytic virus that infects and destroys cancer cells while sparing normal cells. This virus is still experimental and may appear in clinical trials or research discussions.

Sweet Elm, also known as Gray Elm, Indian Elm, Red Elm, Slippery Elm, Ulmus fulva, or Ulmus rubra, is a tree native to eastern North America. Its inner bark has been used traditionally to soothe irritated tissues and may have antioxidant effects. While sometimes mentioned in cancer care for symptom relief or supportive care, it is not a proven cancer treatment. If you see this term, ask your healthcare team what it means for your care.

Sturge-Weber Syndrome (SWS) is a rare condition present at birth that affects the brain, skin, and eyes. It often causes a red or purple birthmark called a port-wine stain on one side of the face. People with SWS may have seizures, glaucoma (eye pressure), and learning difficulties. Treatment focuses on managing symptoms, so it’s important to discuss what this diagnosis means for each person with their healthcare team.

Swyer syndrome is a rare genetic condition where a person has one X and one Y chromosome but develops female physical traits. The ovaries do not develop properly and are replaced by nonfunctional tissue. This condition increases the risk of certain germ cell tumors. It is usually diagnosed during puberty when menstrual periods do not start as expected. Treatment often includes hormone therapy and removal of the nonfunctional gonads to reduce cancer risk.

Syk kinase inhibitor R-935788, also known as fostamatinib disodium, R788 sodium, or Tavalisse, is a medicine used to treat adults with chronic immune thrombocytopenia (ITP). ITP is a condition where the immune system destroys blood platelets, causing low platelet counts. This drug works by blocking an enzyme called Syk to help protect platelets and reduce bleeding risks. It is taken by mouth and is being studied for other diseases, including some cancers.

Sylatron is a drug that contains peginterferon alfa-2b, a type of protein called a cytokine that helps the immune system. It was used to help prevent melanoma, a type of skin cancer, from coming back after surgery. Sylatron works by boosting the body’s immune response to fight cancer cells. It is no longer available in the United States but was part of treatments for several cancers.

Sylvant, also known as siltuximab, CNTO 328, or anti-IL-6 chimeric monoclonal antibody, is a medicine used to treat a rare disease called multicentric Castleman disease in patients without HIV or human herpesvirus 8. It works by blocking a protein called interleukin-6 (IL-6), which can cause inflammation and support abnormal cell growth. Sylvant is also being studied for some cancers and other conditions.

The sympathetic nervous system is part of your body's automatic nervous system that helps prepare you for action by increasing heart rate, blood pressure, and breathing. It also narrows blood vessels and reduces digestive juices. In cancer care, understanding this system can help explain some symptoms or side effects related to automatic body functions like heart rate and digestion.

A symptom is something you feel or experience that may suggest you have a disease or condition. Symptoms are personal and cannot be seen or measured by others. Examples include pain, tiredness, or nausea. In cancer care, symptoms help guide diagnosis and treatment but do not always show up on tests.

Symptom management in cancer care means treatments and actions that help relieve symptoms caused by cancer or its treatment. It aims to make patients more comfortable by reducing pain, fever, nausea, or stress. Symptom management does not treat or cure cancer itself but supports quality of life during treatment or recovery. Patients should ask their care team how symptom management applies to their situation.

Symptomatic means having symptoms or signs of a disease or condition. Symptomatic treatment focuses on relieving these symptoms, such as pain or fever, without curing the underlying cause. In cancer care, understanding whether symptoms are present helps guide diagnosis, treatment decisions, and monitoring. Patients should ask their care team how the term applies to their specific situation.

A synapse is a tiny gap between nerve cells or between a nerve cell and another cell, like a muscle or gland cell. It allows nerve signals to pass using chemicals called neurotransmitters. In cancer care, researchers are exploring how synapses might help highlight cancer cells during imaging or deliver treatments directly to tumors. If you hear this term, ask your care team how it relates to your situation.

A syncytium is a large cell-like structure formed when two or more cells join together, sharing their contents. This can happen naturally in the body, such as in certain muscles and the placenta. In the digestive system, smooth muscle cells work closely with other specialized cells as a syncytium to help muscles contract and move food along.

A syndrome is a group of symptoms or conditions that often occur together and suggest the presence of a particular disease or an increased chance of developing one. Syndromes can involve many parts of the body or mind and are not always a diagnosis by themselves. Understanding how a syndrome applies to an individual requires talking with your healthcare team.

Synergistic describes when two or more treatments or drugs work together to create a stronger effect than each would alone. In cancer care, this idea helps doctors combine therapies to improve results. Patients may hear this term when discussing drug combinations or treatment plans, but it’s important to ask your care team what it means for your specific situation.

Syngeneic refers to a bone marrow or stem cell transplant where the donor is a patient’s healthy identical twin. This type of transplant is used mainly for blood cancers like leukemia or lymphoma to replace damaged stem cells after strong treatments. Patients and caregivers should ask their care team how this term applies to their specific situation rather than assuming it means a particular diagnosis or treatment.

A syngeneic bone marrow transplant is a procedure where healthy blood-forming stem cells come from a patient’s identical twin. It helps restore the body’s ability to make new blood cells after treatments like chemotherapy or radiation that destroy the patient’s own stem cells. Patients and caregivers should ask their care team how this applies to their specific situation.

Syngeneic Stem Cell Transplantation is a procedure where a patient receives blood-forming stem cells from their healthy identical twin. This transplant helps restore the body’s ability to make new blood cells after treatments like chemotherapy or radiation that damage the patient’s own stem cells. It is mainly used for blood cancers such as leukemia or lymphoma. Patients should discuss with their care team how this treatment applies to their specific situation.

The synovial membrane is a special layer of connective tissue that lines the inside of joints, tendon sheaths, and fluid-filled sacs called bursas. It produces synovial fluid, which helps lubricate and protect joints during movement. If you see this term in your medical records, ask your care team how it relates to your situation rather than assuming it means a diagnosis or treatment.

Synovial sarcoma is a rare type of cancer that usually forms in the soft tissues near joints, especially in the arms or legs. It often appears as a painless lump and mainly affects children and young adults. Treatment typically involves surgery, and newer options like afamitresgene autoleucel (Tecelra) may be available for cases where the cancer has spread or cannot be removed by surgery.

Synovitis is inflammation of the synovial membrane, the soft tissue lining joints like the knee, hip, or shoulder. It causes joint pain, swelling, and warmth. Synovitis often occurs with arthritis and other conditions. Treatment depends on the cause and may include anti-inflammatory medicines. If you see this term in your medical records, ask your care team what it means for your situation.

Synribo, also known as omacetaxine mepesuccinate or homoharringtonine, is a drug used to treat adults with chronic myeloid leukemia (CML) when other treatments called tyrosine kinase inhibitors have not worked or cannot be used. It works by blocking proteins that cancer cells need to grow and may also be studied for other cancers.

Synthetic means man-made substances created in a lab rather than taken directly from nature. In cancer care, synthetic medicines include man-made hormones, opioids, and other drugs used to treat symptoms or side effects. It’s important to understand the word synthetic in context and ask your care team how it applies to your specific situation.

Synthetic Human Secretin, also known as Chirhostim or Secretin Human, is a lab-made hormone used in medical tests to check how the pancreas works. It helps doctors diagnose certain pancreatic problems, including rare tumors called gastrinomas. If you see this term, ask your care team what it means for your specific situation rather than assuming it is a diagnosis or treatment.

Synthetic lethality describes a situation where changes in two genes together cause cell death, but a change in only one gene does not. This concept helps researchers understand gene functions and develop new cancer treatments. If you see this term in your care, ask your medical team how it relates to your specific situation rather than treating it as a diagnosis or treatment by itself.

Synthetic protegrin analogs are lab-made proteins designed to kill certain bacteria, fungi, and viruses by damaging their outer membranes. One example, iseganan, is being studied as a possible treatment for painful mouth sores (oral mucositis) caused by cancer treatments like radiation. Patients should ask their care team how this term relates to their own care, as it is not a diagnosis or standard treatment.

Synthetic retinoids are man-made substances related to vitamin A. They are used in skin care, dermatology, and being studied for some cancer treatments, especially for patients at higher risk of skin cancers. If you see this term, ask your care team how it applies to your situation rather than assuming it means a diagnosis or treatment plan.

A syringe is a small, hollow tube with a plunger used to inject liquids into the body or withdraw fluids. Syringes are commonly used in medical care for injections, drawing blood, or giving medicines like insulin. Most syringes today are made of plastic and designed for single use to reduce infection risks. Special syringes, like insulin syringes, have features to make self-injection easier and less painful.

A systematic biopsy is a procedure used to help diagnose prostate cancer. It involves taking multiple tissue samples from different areas of the prostate using a needle guided by ultrasound. This method does not focus on specific spots but samples the prostate broadly. Patients should discuss with their care team what this test means for their individual situation.

In medicine, systemic means affecting the whole body or multiple organ systems. In cancer care, systemic often refers to treatments like chemotherapy that travel through the bloodstream to reach cancer cells throughout the body. The term’s meaning can vary depending on the context, so it’s important to ask your care team how it applies to your specific situation.

Systemic chemotherapy is a cancer treatment using drugs that travel through the bloodstream to reach cancer cells throughout the body. It can be used alone or with other treatments to help control or shrink cancer. Some forms, like Doxil, are designed to reduce side effects. Patients should talk with their care team to understand how systemic chemotherapy fits their specific treatment plan.

Systemic disease is a medical term for illnesses that affect the whole body or multiple organs, rather than just one area. In cancer care, systemic often refers to treatments or conditions that involve the entire body. Because the meaning can vary, it’s important to ask your healthcare team how it applies to your specific situation.

Systemic Inflammatory Response Syndrome (SIRS) is a serious condition where the body reacts with widespread inflammation. It can be caused by infections, injuries, surgery, or other health problems. Signs include fever or low body temperature, fast heartbeat, rapid breathing, and abnormal white blood cell counts. In cancer care, some treatments can trigger a related immune reaction called cytokine release syndrome (CRS).

Systemic lupus erythematosus (SLE), often called lupus, is a long-lasting autoimmune disease where the immune system mistakenly attacks healthy tissues. It can affect many parts of the body, including the skin, joints, kidneys, heart, lungs, and brain. Symptoms vary widely and may include rashes, joint pain, fatigue, and organ problems. Not everyone with lupus has the same symptoms, and the disease can appear differently in each person.

Systemic mastocytosis is a rare condition where too many mast cells, a type of immune cell, build up in organs like the skin, bone marrow, liver, and digestive tract. This buildup can cause symptoms such as itching, flushing, abdominal pain, and low blood pressure. It may be serious and sometimes requires specialized treatment and monitoring by doctors familiar with this rare disorder.

Systemic Mastocytosis With Associated Hematologic Neoplasm (SM-AHN) is a rare condition where too many mast cells, a type of white blood cell, build up in the body alongside another blood disorder. This buildup can affect organs like the bone marrow, liver, spleen, and intestines. SM-AHN usually occurs in adults and requires careful medical evaluation to understand its impact on health and treatment.

Systemic radiation therapy is a cancer treatment where a radioactive substance is swallowed or injected into the body. This substance travels through the bloodstream to find and kill cancer cells throughout the body. It is different from radiation aimed directly at a tumor and is used to treat cancers that may have spread or are in multiple places.

Systemic scleroderma, also called systemic sclerosis, is a rare autoimmune disease that causes the skin and connective tissues to harden and thicken. It can affect internal organs like the lungs, heart, kidneys, and digestive system. Symptoms vary widely and may include tight skin, circulation problems, and organ issues. It sometimes develops in people with chronic kidney failure or after certain chemotherapy treatments. Understanding this condition helps patients and caregivers ask the right questions about diagnosis and care.

Systemic sclerosis, also called systemic scleroderma, is a rare autoimmune disease that causes the skin and connective tissues to become hard and thick. It can also affect internal organs like the lungs, heart, kidneys, and digestive system. Symptoms vary widely and may include tight skin, circulation problems, and organ issues. Understanding this condition helps patients and caregivers ask the right questions about diagnosis and care.

Systemic therapy is cancer treatment using medicines that travel through the bloodstream to reach and affect cancer cells throughout the body. This includes chemotherapy, hormonal therapy, and targeted therapy. It can treat cancer that has spread or is in multiple places. Patients should ask their care team how systemic therapy applies to their specific situation, as it is not a diagnosis or a single treatment plan.