Cholesteatoma
cholesteatoma cho·les·te·a·to·ma (kə-lěs’tē-ə-tō’mə, kō’lĭ-stē’ə-)
n. pl. cho·les·te·a·to·mas or cho·les·te·a·to·ma·ta (-mə-tə)
A tumorlike mass of keratinizing squamous epithelium and cholesterol, usually occurring in the middle ear and mastoid region. Also called pearl tumor.
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