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The Medical Terminology and Drug Database is provided as a convenience to our users. Definitions are provided by the National Cancer Institute, U.S. National Institutes of Health, for informational purposes only. This list is updated monthly.
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WBC
White blood cell. Refers to a blood cell that does not contain hemoglobin. White blood cells include lymphocytes, neutrophils, eosinophils, macrophages, and mast cells. These cells are made by bone marrow and help the body fight infection and other diseases.
Waldenstrom's macroglobulinemia
An indolent (slowly progressing) type of non-Hodgkin's lymphoma marked by abnormal levels of IgM antibodies in the blood and an enlarged liver, spleen, or lymph nodes. Also called lymphoplasmacytic lymphoma.
Waldenström's macroglobulinemia
An indolent (slow-growing) type of non-Hodgkin�s lymphoma marked by abnormal levels of IgM antibodies in the blood and an enlarged liver, spleen, or lymph nodes. Also called lymphoplasmacytic lymphoma.
Wermer's syndrome
A rare, inherited disorder that affects the endocrine glands and can cause tumors in the parathyroid and pituitary glands and the pancreas. These tumors (usually benign) cause the glands to secrete high levels of hormones, which can lead to other medical problems, such as kidney stones, fertility problems, and severe ulcers. In some cases, tumors inside the pancreas can become cancerous. Also called multiple endocrine adenomatosis and multiple endocrine neoplasia type 1 syndrome.
Whipple procedure
A type of surgery used to treat pancreatic cancer. The head of the pancreas, the duodenum, a portion of the stomach, and other nearby tissues are removed.
Whitmore-Jewett staging system
A staging system for prostate cancer that uses ABCD. "A" and "B" refer to cancer that is confined to the prostate. "C" refers to cancer that has grown out of the prostate but has not spread to lymph nodes or other places in the body. "D" refers to cancer that has spread to lymph nodes or to other places in the body. Also called the ABCD rating or the Jewett staging system.
Wilms' tumor
A kidney cancer that usually occurs in children younger than 5 years old.
warfarin
A drug that prevents blood from clotting. It belongs to the family of drugs called anticoagulants (blood thinners).
wart
A raised growth on the surface of the skin or other organ.
watchful waiting
Closely monitoring a patient's condition but withholding treatment until symptoms appear or change. Also called observation.
wedge resection
A surgical procedure to remove a triangle-shaped slice of tissue. It may be used to remove a tumor and a small amount of normal tissue around it.
well-differentiated lymphocytic lymphoma
An indolent (slow-growing) type of B-cell non-Hodgkin's lymphoma marked by swollen lymph nodes that usually occurs in people older than 50 years. It is very similar to a form of leukemia called chronic lymphocytic leukemia (CLL). Also called small lymphocytic lymphoma.
white blood cell
WBC. Refers to a blood cell that does not contain hemoglobin. White blood cells include lymphocytes, neutrophils, eosinophils, macrophages, and mast cells. These cells are made by bone marrow and help the body fight infection and other diseases.
whole cell vaccine
Vaccine made from whole tumor cells that have been changed in the laboratory.
windpipe
The airway that leads from the larynx to the lungs. Also called the trachea.
womb
The small, hollow, pear-shaped organ in a woman's pelvis. This is the organ in which a fetus develops. Also called the uterus.