NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,846 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.

periodic neutropenia
(PEER-ee-AH-dik noo-troh-PEE-nee-uh)
A chronic condition that affects neutrophils (a type of white blood cell). In periodic neutropenia, the number of neutrophils in the blood goes in cycles from normal to low and back to normal again. Symptoms include fever, inflamed mucous membranes in the mouth, and infections. Also called cyclic neutropenia.