[Monostotic fibrous dysplasia of the temporal bone coinciding with cholesteatoma].

Fibrous dysplasia is a rare disease which occasionally affects the temporal bone. In its monostotic form, only 27 cases have been reported until today. We present a case of monostotic fibrous dysplasia of the temporal bone coincident with a cholesteatoma of the EAC, operated on by mean of a modified radical mastoidectomy, with good results.