NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,791 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

stage I mycosis fungoides
(... my-KOH-sis fun-GOY-deez)
Stage I is divided into stages IA and IB. In stage IA, less than 10% of the skin surface is covered with patches, papules, and/or plaques. In stage IB, 10% or more of the skin surface is covered with patches, papules, and/or plaques. In stages IA and IB, there may be abnormal lymphocytes in the blood but they are not cancerous.