oncocytoma

oncocytoma
A glandular tumor composed of large cells with cytoplasm that is granular and eosinophilic because of the presence of abundant mitochondria; occurs uncommonly in the kidney, salivary glands, and endocrine glands. SYN: oxyphil adenoma. [onco- + G. kytos, cell, + -oma, tumor]

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on·co·cy·to·ma also on·ko·cy·to·ma .äŋ-kō-sī-'tō-mə n, pl -mas also -ma·ta -mət-ə a tumor (as of the parotid gland) consisting chiefly or entirely of oncocytes

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on·co·cy·to·ma (ong″ko-si-toґmə) [oncocyte + -oma] 1. a usually benign adenoma composed of oncocytes, often referring specifically to a tumor of the salivary glands. Called also oncocytic adenoma, oxyphilic adenoma, and oxyphil cell tumor. 2. HÑŒrthle cell adenoma.

Medical dictionary. 2011.

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