LX Congenital Cholesteatoma of the Middle Ear and Mastoid

Abstract
Ten cases of apparent congenital cholesteatoma of the middle ear and mastoid are presented. Five of the cholesteatomas were in the middle ear, 2 involved principally the attic region, one was isolated in the mastoid process, and the last 2 showed extensive attic and mastoid involvement. A historical review of the pathogenesis of cholesteatoma provides a classification of the theories of cholesteatoma gpnesis; a classification of cholesteatoma of the temporal bone. The salient clinical features of intratemporal congenital choles-teatomata are compared with those of congenital cholesteatoma in the middle ear and mastoid.

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