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.

leukopenia
(LOO-koh-PEE-nee-uh)
A condition in which there is a lower-than-normal number of leukocytes (white blood cells) in the blood.