NCIt synonyms : Cholesteatoma of Middle Ear; Cholesteatoma of the Middle Ear;
NCIt definition : A non-neoplastic lesion characterized by the proliferation of keratinizing squamous
epithelium in the middle ear that results in the accumulation of keratin and cells.
It is usually caused by repeated infections. If left untreated, it may increase in
size and destroy the adjacent delicate bones of the middle ear.;