Characteristics of a pathological process in the destroyed tympanic part of the facial canal in chronic otitis media with cholesteatoma.

The authors examined the histopathological characteristics at the sites of destruction of the tympanic part of the facial canal in chronic otitis media with cholesteatoma. Two types of pathological process were observed. The first is characterized by the cholesteatoma at the sites resorption and the second is characterized by pronounced granulation or fibrocystic tissue.