NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,790 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.

papillary tumor
(PA-pih-LAYR-ee TOO-mer)
A tumor shaped like a small mushroom, with its stem attached to the epithelial layer (inner lining) of an organ.