NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,777 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.

alopecia
(A-loh-PEE-shuh)
The lack or loss of hair from areas of the body where hair is usually found. Alopecia can be a side effect of some cancer treatments.