W Glossary Terms

WAGR syndrome is a rare genetic condition present at birth that can cause Wilms' tumor (a kidney cancer), aniridia (missing iris in the eye), genitourinary abnormalities, and developmental delays. Children with WAGR syndrome need regular kidney checks until about age 6 to 8 due to cancer risk, and ongoing follow-up for possible kidney problems later in childhood.

A waitlist control is a group of people in a clinical trial who wait to receive treatment after the main treatment group. They help researchers compare results by receiving the treatment later. If you see this term, ask your care team what it means for you, as it is not a diagnosis or treatment advice by itself.

Waldenström macroglobulinemia is a rare, slow-growing type of non-Hodgkin lymphoma that affects certain white blood cells and causes high levels of a protein called IgM antibody in the blood. It may also be called lymphoplasmacytic lymphoma. People with this condition may have enlarged lymph nodes, liver, or spleen, and are at higher risk for developing other cancers. It is treatable but not currently curable.

Waldeyer’s ring is a ring of lymphoid tissue in the throat that includes the tonsils, adenoids, and other immune tissues. It helps the body fight infections. If you see this term in medical information, ask your care team how it relates to your or your loved one’s health, as it is not a diagnosis or treatment by itself.

Cancer metabolism, also called Warburg targeting, describes how cancer cells change the way they produce energy. Unlike normal cells, many cancer cells rely more on breaking down sugar through a process called glycolysis, even when oxygen is present. Researchers study these changes to find new treatments that target cancer cells’ unique energy needs. These approaches are still being researched and are not yet standard cancer treatments.

Warburg-Based Metabolic Diets are nutrition plans discussed in cancer care that focus on supporting metabolism, inflammation, digestion, immune health, and treatment tolerance. These diets are sometimes considered as part of supportive care or alternative approaches but should always be reviewed with healthcare providers to ensure safety and appropriateness alongside conventional cancer treatments.

Warfarin is a medicine that helps prevent blood clots by thinning the blood. It is often used to lower the risk of clots in people with certain heart or vein conditions. In cancer care, warfarin may be part of managing clot risks, especially for patients who have surgery or other treatments that increase clotting chances. If you see the word warfarin, ask your care team how it relates to your treatment and safety.

Warm ischemia refers to the time during surgery when a tissue, organ, or body part stays at body temperature after its blood supply has been reduced or stopped. This term is often used in cancer-related surgeries. If you see this term, it’s important to ask your care team how it applies to your specific situation rather than assuming it means a diagnosis or treatment plan.

Warm ischemia time is the period during surgery when a tissue, organ, or body part stays at normal body temperature after its blood supply has been reduced or stopped. This happens before the tissue is cooled or blood flow is restored. It is a technical term related to surgical care and not a diagnosis or treatment by itself. Patients should ask their care team how it applies to their specific situation.

A wart is a small, raised growth on the skin or other body parts caused by certain types of human papillomavirus (HPV). Warts can appear on the hands, feet, genitals, or other areas. Some types of HPV that cause warts can increase the risk of certain cancers, making understanding warts important in health care.

Wasting syndrome, also called cachexia, is a condition where a person loses more than 10% of their body weight without trying. It involves loss of muscle and fat, leading to weakness and fatigue. It often occurs in people with advanced cancer or other serious illnesses and is hard to reverse with nutrition alone.

Watchful waiting means closely monitoring a health condition without starting treatment right away. It is often used when treatment risks or repeated tests might outweigh benefits. Patients and caregivers should ask their care team how watchful waiting applies to their specific situation rather than assuming it is a diagnosis or treatment plan on its own.

The Water Deprivation Test, also called the Fluid Deprivation Test, measures how much urine a person produces and how concentrated it becomes when they stop drinking fluids for a set time. It helps doctors check kidney function and diagnose conditions like diabetes insipidus, which causes excessive thirst and urine output. If you see this term, ask your care team how it relates to your health rather than assuming it means a diagnosis or treatment.

A water pipe, also called a hookah, is a device used to smoke flavored tobacco heated by charcoal. The smoke passes through water before being inhaled. Water pipe smoke contains nicotine and many harmful chemicals that can cause addiction and health problems similar to cigarette smoking. It is important to understand hookah use in context and discuss its meaning and risks with your care team.

Water-soluble vitamins are nutrients your body needs daily because they dissolve in water and are not stored. These include vitamin C and the B vitamins like riboflavin (B2) and biotin. Both too little and too much intake can cause health problems, but excess water-soluble vitamins are less likely to cause harm. Always discuss with your care team how these vitamins relate to your health or treatment.

Watercress, also called Indian Cress, is a leafy green plant with a peppery taste often used in salads and cooking. Parts of the plant have been used in traditional medicine, and some studies suggest it may have anticancer effects. If you see this term in your medical information, ask your care team what it means for your specific situation rather than assuming it is a diagnosis or treatment.

WBC stands for white blood cell, also called leukocyte. These cells are part of your immune system and help protect your body from infections and diseases. Doctors often check your white blood cell count through blood tests to monitor your immune health, detect infections, or look for blood cancers. WBC counts can change for many reasons, so it’s important to ask your care team what your results mean for you.

Whole-Brain Radiation Therapy (WBRT) is a cancer treatment that uses radiation to target the entire brain. It is often used when cancer has spread to the brain or when multiple brain tumors are present. WBRT is given over several sessions and may help relieve symptoms and control tumor growth. Patients should discuss with their care team how WBRT applies to their specific situation.

A wedge resection is a surgery that removes a small, triangle-shaped piece of tissue, often including a tumor and some healthy tissue around it. It is sometimes used in lung cancer patients who have limited lung function or in other lung conditions. If you see this term, ask your care team how it applies to your specific situation rather than assuming it means a particular treatment or diagnosis.

The WEE1 protein is found inside cells and helps control how they grow and divide. Some cancer cells have more WEE1 protein than usual, which may help them grow and spread. Drugs that block WEE1 are being studied as possible cancer treatments. 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 plan.

Weight loss surgery, also called bariatric surgery, is an operation that helps people with obesity lose weight by changing the stomach or intestines. It can improve health problems related to obesity and may lower the risk of some cancers. Different types of surgery work by limiting food intake or reducing nutrient absorption. It is usually considered when diet and exercise have not worked.

Welireg, also known as Belzutifan, is a targeted medicine taken by mouth to treat certain advanced kidney cancers and tumors linked to von Hippel-Lindau (VHL) disease. It works by blocking a protein that tumors need to grow and form new blood vessels. Welireg is used when surgery is not needed right away and may help control tumor growth in adults and older children.

Well-differentiated cancer cells look and behave more like normal cells. These cells tend to grow and spread more slowly compared to poorly differentiated cancer cells, which appear more abnormal. Understanding whether cancer cells are well-differentiated helps doctors learn about the cancer’s behavior. Patients should always discuss what this term means for their specific case with their care team.

Well-Differentiated Lymphocytic Lymphoma, also called Small Lymphocytic Lymphoma (SLL), is a slow-growing cancer that mainly affects lymphocytes, a type of white blood cell, in the lymph nodes. It often causes swollen lymph nodes and is closely related to chronic lymphocytic leukemia (CLL), which affects blood and bone marrow. Understanding this term helps patients discuss diagnosis and treatment with their care team.

Wellbutrin, also known as bupropion hydrochloride or Zyban, is a medicine used to treat depression and help people quit smoking. It works by balancing brain chemicals that affect mood and cravings. In cancer care, it may be prescribed to support emotional health or assist with smoking cessation. If you see this name in your care, ask your healthcare team how it relates to your treatment plan.

WellConnected Gut Restore Masterclass is an educational event featuring interviews with experts on gut health, immunity, and chronic disease. In cancer care, it may be discussed for symptom relief, nutrition support, treatment tolerance, or quality of life. Patients interested in complementary approaches often explore it to better understand gut-related symptoms and support recovery. Always talk with your cancer care team before trying it, especially during active treatment.

WellConnected Rewire Your Brain Masterclass is a mental health and brain health program that some people with cancer explore to help manage stress, anxiety, and symptoms related to their illness or treatment. It is considered a supportive approach aimed at improving quality of life and recovery, but it is not a substitute for cancer treatment. Always discuss its use with your healthcare team to ensure safety and coordination with your care.

Wermer Syndrome, also called MEN1 Syndrome or Multiple Endocrine Adenomatosis, is a rare inherited condition that causes mostly noncancerous tumors in hormone-producing glands like the parathyroid, pituitary, and pancreas. These tumors can lead to hormone imbalances causing symptoms such as kidney stones, fertility problems, and ulcers. Some pancreatic tumors may become cancerous, so regular monitoring is important.

Werner syndrome, also called adult progeria or WS, is a rare inherited condition that causes people to age faster than usual starting in their teens or young adulthood. It leads to early signs like thinning and graying hair, skin changes, and unusual facial features. People with Werner syndrome have a higher risk of certain cancers, including thyroid cancer, skin cancer, and sarcomas (bone or soft tissue cancers).

WES, or Whole Exome Sequencing, is a lab test that reads the parts of your DNA that carry instructions for making proteins. It helps find gene changes that might cause diseases like cancer. If you see WES in your medical information, ask your care team what it means for your specific situation instead of assuming it is a diagnosis or treatment.

Western Medicine, also called allopathic medicine, biomedicine, or conventional medicine, is the common system where doctors and healthcare professionals treat illnesses using drugs, surgery, or radiation. It is the usual approach for diagnosing and treating cancer and many other diseases, based on scientific research and widely accepted medical practices. It may also appear under related names such as Allopathic Medicine, Biomedicine, Conventional Medicine, Mainstream Medicine, And Orthodox Medicine.

The Weston A. Price Traditional Diet is a nutrient-rich eating pattern based on whole, minimally processed foods inspired by early 20th-century observations of ancestral diets. It emphasizes mineral-rich meals, traditional animal and plant foods, and avoids refined flour, sugar, and industrial foods. While not a cancer treatment, it may be discussed for nutrition support, symptom relief, or quality of life during cancer care. Always talk with your healthcare team before making changes.

A Whole Food Plant-Based (WFPB) Diet focuses on eating mostly unprocessed plant foods like vegetables, fruits, whole grains, legumes, nuts, and seeds, while avoiding animal products and highly processed foods. It is discussed in cancer care for its potential effects on nutrition, metabolism, inflammation, digestion, immune health, and treatment tolerance. Patients should review this diet with their healthcare team before making changes.

The Whole Food Plant-Based (WFPB) Diet focuses on eating mostly unprocessed plant foods like vegetables, fruits, whole grains, legumes, nuts, and seeds. It avoids all animal products and highly processed foods. In cancer care, it is discussed for its possible effects on nutrition, inflammation, digestion, immune health, and treatment tolerance. Patients should talk with their healthcare team before making diet changes.

Whole Genome Sequencing (WGS) is a laboratory test that reads the complete DNA sequence of a person’s genome. It helps find genetic changes that might cause diseases like cancer. Patients may see WGS mentioned in medical reports or discussions. It’s important to understand what WGS means for your specific situation by talking with your care team, rather than assuming it is a diagnosis or treatment on its own.

Wheezing is a high-pitched, whistling sound heard when breathing, caused by narrowed or blocked airways. It can happen in lung diseases like asthma or lung cancer, or as a side effect of cancer treatments. If you notice wheezing, it’s important to talk with your care team to understand what it means for your health and treatment.

Whey protein powder is a powdered form of protein made from whey, the liquid leftover when cheese is made from cow’s milk. It is often used to add protein to the diet and is being studied for possible health benefits. Patients should discuss its use with their care team to understand if it fits their individual needs and treatment plan.

The Whipple procedure, also called pancreatoduodenectomy, is a major surgery to remove cancer from the head of the pancreas. It involves taking out the head of the pancreas, part of the small intestine, a portion of the stomach, the gallbladder, and nearby tissues. This surgery aims to remove the tumor and improve symptoms but is suitable for only some patients with pancreatic cancer.

White blood cells, also called leukocytes or WBCs, are immune system cells that help protect the body from infections and other harmful substances. They are made in the bone marrow and circulate in the blood and lymph. Doctors often check white blood cell counts to help detect infections, blood disorders, or cancers like leukemia.

The Whitmore-Jewett Staging System, also called the ABCD Rating or Jewett Staging System, is a way doctors describe how far prostate cancer has spread. It uses letters A through D to show if the cancer is inside the prostate, has grown outside it, or has spread to lymph nodes or other parts of the body. This helps guide treatment decisions and understand the cancer’s stage.

The WHO, or World Health Organization, is a global health agency that works to improve health care and control diseases worldwide. It sets health standards, supports research, and provides guidance on health issues, including cancer. When you see WHO mentioned in medical information, it usually refers to this organization, not a diagnosis or treatment plan.

A whole cell vaccine is made from entire tumor cells that have been altered in a lab. These vaccines aim to help the immune system recognize and fight cancer by using the whole cancer cell as a target. They are one type of cancer vaccine studied in research and clinical trials.

Whole Exome Sequencing (WES or WXS) is a lab test that reads the parts of your DNA called exons, which carry instructions for making proteins. It helps find gene changes that might cause diseases like cancer. If you see WES in your medical information, ask your care team what it means for your specific situation instead of assuming it is a diagnosis or treatment.

The Whole Food Plant-Based (WFPB) Diet focuses on eating mostly unprocessed plant foods like vegetables, fruits, whole grains, legumes, nuts, and seeds, while avoiding animal products and highly processed foods. In cancer care, it is discussed for its possible effects on nutrition, inflammation, digestion, immune health, and treatment tolerance. Patients should talk with their healthcare team before making diet changes.

The Whole Food Plant-Based (WFPB) Diet focuses on eating mostly unprocessed plant foods like vegetables, fruits, whole grains, legumes, nuts, and seeds. It avoids animal products and highly processed foods. In cancer care, it is discussed for its possible effects on nutrition, inflammation, digestion, immune health, and treatment tolerance. Patients should talk with their healthcare team before making diet changes.

Whole Genome Sequencing (WGS) is a laboratory test that reads the complete DNA sequence of a person’s genome. It helps find genetic changes that might cause diseases like cancer. WGS is mainly used in research but is increasingly part of clinical care. Patients may see WGS mentioned in medical reports or discussions and should ask their care team what it means for their specific situation.

Whole-Brain Radiation Therapy (WBRT) is a cancer treatment that uses radiation to treat the entire brain. It is often used when cancer has spread to the brain or when multiple brain tumors are present. WBRT is given over several sessions and may help control tumor growth and relieve symptoms. It may also cause side effects affecting memory and thinking.

Whole-Brain Radiotherapy (WBRT) is a cancer treatment that uses radiation to treat the entire brain. It is often used when cancer has spread to the brain or when multiple brain tumors are present. WBRT is given over several sessions and may help control tumor growth and relieve symptoms, but it can also cause side effects affecting memory and thinking.

Ancient grains and whole grains are nutrient-rich foods that include all parts of the grain kernel, such as oats, quinoa, and millet. In cancer care, these grains support overall nutrition, digestion, and immune health. While not treatments for cancer, they are often recommended as part of a balanced diet to help maintain strength and well-being during and after cancer treatment.

Whooping cough, also called pertussis, is a contagious bacterial infection that causes severe coughing fits. It often starts like a cold but can lead to long-lasting coughs with a distinctive “whooping” sound when breathing in. Babies under one year old are especially at risk and may need hospital care. Vaccines and antibiotics can help prevent and treat whooping cough.

A wide local excision is a surgery to remove a tumor or abnormal tissue along with some normal tissue around it. It is often used for certain skin or breast cancers. The goal is to remove the problem while preserving as much healthy tissue as possible. Patients should ask their care team how this procedure applies to their specific situation.

Wild Clover, also known as Purple Clover, Red Clover, or Trifolium pratense, is a flowering plant used in some cultures for health purposes. It contains natural compounds called isoflavones, which act like weak forms of estrogen. It is being studied for possible benefits in easing menopausal symptoms and potential anticancer effects, but it is not a proven cancer treatment. Always discuss its use with your healthcare team.

A wild-type gene is a gene in its natural, unchanged form. In cancer care, knowing if a tumor has a wild-type or mutated gene can help guide treatment decisions. Patients should understand this term in context and ask their care team how it relates to their specific situation, rather than seeing it as a diagnosis or treatment on its own.

The wild-type KRAS gene is the normal, unchanged form of the KRAS gene. It makes a protein that helps control how cells grow and divide. Knowing if a tumor has the wild-type or a mutated KRAS gene can help doctors plan cancer treatment, especially for cancers like colorectal, lung, or pancreatic cancer. Patients should ask their care team what this means for their specific situation.

A will is a legal document where a person states how their property should be handled after their death. It can also name who will carry out these wishes and who will care for any minor children. In cancer care, having a will helps ensure your wishes are known and respected, providing peace of mind for you and your loved ones.

Wilms tumor is a rare kidney cancer that mostly affects young children, usually under age 5. It often shows up as a painless lump in the belly. Other signs can include blood in the urine or unexplained fever. Children at higher risk may need regular screening until about age 8. Treatment often involves surgery, chemotherapy, and sometimes radiation. If you hear this term, ask your care team how it relates to your or your child’s situation.

Wilson Disease, also called hepatolenticular degeneration, is a rare inherited disorder where too much copper builds up in the body. This extra copper mainly affects the liver, brain, and eyes, causing symptoms like yellowing of the skin and eyes, swelling, fatigue, movement problems, and mood changes. It usually starts in childhood or young adulthood and requires lifelong treatment to manage copper levels.

Wim Hof Method Breathing is a breathing technique used to help manage stress, anxiety, breathlessness, sleep problems, and fatigue during cancer treatment or recovery. It aims to support the nervous system and improve overall well-being. Patients should discuss this practice with their care team to understand if it is safe and appropriate for their specific situation.

The windpipe, also called the trachea, is a sturdy tube made of cartilage that connects your voice box (larynx) to the large airways (bronchi) leading into your lungs. It allows air to pass in and out when you breathe. Understanding the windpipe helps patients know where certain cancers or conditions may be located and why specific tests or treatments are needed.

Wire localization, also called needle localization or needle/wire localization, is a procedure that helps doctors mark a small area of abnormal tissue inside the body. Using imaging like X-rays or ultrasound, a thin wire with a tiny hook is placed into or near the abnormal spot to guide the surgeon during biopsy or surgery. The wire stays in place until the tissue is removed, helping ensure the right area is taken out for diagnosis or treatment planning.

A wireless capsule endoscope is a small, pill-sized device with a camera that you swallow to take pictures inside your digestive tract, especially the intestines. It sends images wirelessly to a recorder you wear, helping doctors check for problems without using traditional scopes. The capsule passes naturally during a bowel movement, and the test is usually painless and less invasive.

A wisdom tooth, also called a third molar, is the last tooth to grow in at the back of your mouth, usually between ages 17 and 23. Not everyone has them. They can sometimes cause problems if they don’t come in properly, which may require removal by a dental specialist called an oral and maxillofacial surgeon.

Wiskott-Aldrich Syndrome, also called Aldrich Syndrome, is a rare inherited disorder that mainly affects young boys. It causes skin problems like eczema, low platelet counts leading to bleeding issues, and frequent infections. People with this syndrome have a higher risk of certain blood cancers such as leukemia and lymphoma. Knowing about this condition helps doctors plan careful monitoring and treatment.

Withdrawal refers to the physical and mental symptoms that can happen when a person suddenly stops or reduces use of an addictive substance like alcohol, nicotine, or opioids. In cancer care, doctors may consider withdrawal because it can affect test results, treatment choices, and recovery. Patients and caregivers should ask their care team how withdrawal relates to their specific situation rather than assuming it is a diagnosis or treatment plan.

Wobe-Mugos E is a mixture made from extracts of calf thymus gland and enzymes from papaya and animal pancreases. It has been used in Europe to treat various cancers and herpes virus infections. Patients should discuss its meaning and relevance with their care team rather than assuming it is a specific diagnosis or treatment recommendation.

A WOC Nurse is a registered nurse with special training to care for people who have wounds, ostomies (surgical openings from inside the body to outside), or problems controlling urine or stool. They help manage these conditions with expert knowledge to support healing and daily care. It may also appear under related names such as Wound, Ostomy, And Continence Nurse.

The womb, also called the uterus, is a hollow, pear-shaped organ in a woman’s pelvis where a fetus grows during pregnancy. It plays an important role in reproductive health and can be affected by various conditions, including uterine cancer, fibroids, and other uterine diseases. Understanding the term “womb” helps patients and caregivers better follow medical reports and treatment plans.

Wood alcohol, also called methanol or methyl alcohol, is a clear, colorless, and flammable liquid used in products like antifreeze and paint thinner. It is poisonous if swallowed or inhaled. Methanol may appear under different names in medical or chemical reports, so it’s important to ask your healthcare team what it means for your specific situation.

The World Health Organization (WHO) is a part of the United Nations that works worldwide to improve health. It sets standards for disease control, health care, and medicines, and helps countries respond to health emergencies. WHO also provides guidelines used in cancer care, such as the pain treatment ladder, and classifies certain tumors to guide diagnosis and treatment.

Wormwood Tincture is an herbal extract sometimes discussed in cancer care for its potential to support symptom relief, nutrition, immune health, or treatment recovery. While it has a long history as a medicinal herb, its use in cancer is mostly complementary and should be carefully coordinated with medical treatment to avoid risks or interactions.

A wound is a break or damage to the skin or body tissues caused by injury, surgery, or other factors. In cancer care, wounds may happen after surgery, treatments, or from the cancer itself. Proper care and evaluation by healthcare professionals are important to prevent infection and support healing. This entry helps connect the word with diagnoses, testing, treatments, supportive care, research notes, protocols, media, books, people, organizations, and safety concerns.

A Wound, Ostomy, and Continence Nurse (WOC Nurse) is a registered nurse with special training to care for people who have wounds, ostomies (surgical openings from inside the body to the outside), or problems controlling urine or stool. They help manage these conditions to support healing, comfort, and daily care.

The WRAP53 gene helps protect the ends of chromosomes and supports DNA repair. Changes (mutations) in this gene can lead to problems with cell growth and are linked to a rare inherited condition called dyskeratosis congenita, which affects skin, nails, and mouth, and increases risks for bone marrow failure, lung scarring, and some cancers. Patients should discuss what WRAP53 gene results mean for their specific health with their care team.

The WRN gene makes a protein that helps repair damaged DNA. Changes in this gene can cause Werner syndrome, also called adult progeria, a rare inherited condition that leads to faster aging and a higher risk of certain cancers. If you see WRN gene mentioned in medical information, it’s important to discuss with your care team what it means for your health and cancer risk.

WS, also known as Werner syndrome or adult progeria, is a rare inherited disorder that causes rapid aging starting in adolescence or young adulthood. People with WS have a higher risk of developing certain cancers, including thyroid, skin, and soft tissue cancers. It is caused by changes in a gene important for DNA repair. Understanding WS can help patients and caregivers discuss its impact with their healthcare team.

WX-671 is a substance being studied as a possible treatment for several types of cancer, including pancreatic cancer. It works by blocking certain enzymes that may help cancer cells grow and spread. Patients should discuss with their care team what WX-671 means for their specific situation rather than seeing it as a diagnosis or treatment recommendation on its own.

Whole Exome Sequencing (WXS), also called WES, is a lab test that reads the parts of your DNA called exons, which carry instructions for making proteins. It helps find gene changes that might cause diseases like cancer. If you see WXS in your medical information, ask your care team what it means for your specific situation instead of assuming it is a diagnosis or treatment.