—The cancerous cells of ALL, immature forms of lymphocytes, white blood cells that fight infection.
—A special device surgically placed under the scalp with a direct connection to spinal fluid. Medications to treat central nervous system disease are injected into the reservoir.
—Pinpoint red spots seen on the skin with low platelet counts.
—An abnormal chromosome found in 20% of adults and 5% of children with ALL, the presence of which indicates a somewhat worse prognosis.
—Areas within the body which are relatively impermeable to medications such as chemotherapy but which can harbor cancerous cells. Some of these sites are the central nervous system, the testicles, and the eyes.
—A gland within the chest involved in the maturation of immune cells that can be invaded by T lymphocytes in T-cell ALL.
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Author Info: Marianne Vahey M.D., The Gale Group Inc., Gale, Detroit, Gale Encyclopedia of Cancer, 2002 |