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.

paraneoplastic syndrome
(PAYR-uh-NEE-oh-PLAS-tik SIN-drome)
A group of symptoms that may develop when substances released by some cancer cells disrupt the normal function of surrounding cells and tissue.