malignant pleomorphic adenoma

malignant pleomorphic adenoma
any of several malignant epithelial neoplasms arising in a pre-existing pleomorphic adenoma, usually in the salivary glands of an older adult; it occurs in several types, usually divided into carcinoma ex pleomorphic a. and malignant mixed tumor.

Medical dictionary. 2011.

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  • malignant mixed tumor — a type of malignant pleomorphic adenoma usually occurring in the salivary glands of older adults in one of two forms: in the first both epithelial and mesenchymal components are malignant and may metastasize (carcinosarcoma) and in the second a… …   Medical dictionary

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