Cancer and Tumor Terms
Cancer types, tumors, staging language, and concepts used in oncology. Browse definitions and meanings below.
Terms in this topic
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Cancer has spread from the mucosa (innermost layer) of the colon and/or rectal wall to the submucosa (layer of tissue under the mucosa) of the colon and/or rectal wall.
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Cancer has spread (1) through the muscle layer of the colon and/or rectal wall to the serosa (outermost layer) of the colon and/or rectal wall; or (2) through the serosa of the colon and/or rectal…
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Cancer (1) may have spread through the mucosa (innermost layer) of the colon and/or rectal wall to the submucosa (layer of tissue under the mucosa) and may have spread to the muscle layer of the…
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A type of tumor that begins in the type of cells that give rise to egg cells and is most often found in the ovaries.
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Breast cancer that has not spread beyond the breast or the axillary lymph nodes.
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A term used to describe cancer that is early in its growth, and may not have spread to other parts of the body.
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The unifying feature is molecular rather than anatomic, which is why a bone tumor and a chest wall tumor sit in the same group.
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Named for the tissue it imitates rather than the tissue it came from, which is why it appears in places holding no muscle.
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A mass of rapidly growing cells that begins in embryonic (fetal) tissue.
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Cancer that occurs in endocrine tissue, the tissue in the body that secretes hormones.
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A tumor that is found in endocrine tissue but does not make extra hormones.
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Endometrial cancer arises in the lining of the uterus and typically announces itself through abnormal vaginal bleeding, especially bleeding after menopause.
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A type of brain tumor that begins in cells lining the spinal cord central canal (fluid-filled space down the center) or the ventricles (fluid-filled spaces of the brain).
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A tumor growing from the lining of the brain's fluid spaces, able to shed cells into that fluid and settle further down.
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Cancer that begins in squamous cells (thin, flat cells that look like fish scales).
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Cancer of the blood-forming tissues in which large numbers of immature, abnormal red blood cells are found in the blood and bone marrow.
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Lacking the outer wrapping that surrounds other digestive organs, the esophagus lets a tumor reach neighboring structures early.
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Ewing sarcoma is an aggressive childhood and adolescent cancer of bone or soft tissue, marked by a characteristic chromosomal translocation involving the EWSR1 gene.
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A disease in which malignant (cancer) cells are found in the tissues of the pancreas.
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Cancer has spread outside of the lung in which it began or to other parts of the body.