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Cholesteatoma, Middle Ear

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Definition: A mass of KERATIN-producing squamous EPITHELIUM that resembles an inverted (suck-in) bag of skin in the MIDDLE EAR. It arises from the eardrum (TYMPANIC MEMBRANE) and grows into the MIDDLE EAR causing erosion of EAR OSSICLES and MASTOID that contains the INNER EAR.      Other names Middle Ear Cholesteatoma; Middle Ear Cholesteatomas; Cholesteatomas, Middle Ear; Cholesteatomas, Aural; Cholesteatoma, Aural; Aural Cholesteatomas; Aural Cholesteatoma

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Sources: NLM Medical Subject Headings, NIH UMLS, Drugs@FDA, FDA AERS original data copyright United States Government. No endorsement implied. Last modified 6/6/2012
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