[Osteoma of the middle ear].

Osteomas of the middle ear are extremely rare. Those of the mastoid process being most frequent encountered als the tympanic sitting. Extracanalicular osteomas of the temporal bone are scarce. Bibliography about this particular subject account for 60 communications, only 9 with reference to the middle ear. The AA. report the case of an osteoma of the left incus in an 17-years-old boy, suffering a progressive deafness dating from 3 years term. The otoscopy showed a reddish mass protruding in the tympanum. TC and MNR provided evidence of a mass involving de auditory ossicula. Through an exploratory tympanotomy could be removed the anomaly. Histopathology make sure the diagnosis of osteoma. The AA. remark some clinical and surgical features of the piece compared with the other 10 cases reported in the literature reviewed.