NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,812 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.

episodic breathlessness
(EH-pih-SAH-dik BRETH-les-nes)
A medical condition in which patients have periods of trouble breathing that are followed by periods with no trouble breathing. Episodic breathlessness is seen in patients with lung cancer or other lung diseases, and in some heart conditions.