抄録
Two patients with post-traumatic cholesteatoma of the external auditory meatus are reported. The first patient (3-year-old male) was involved in a motor vehicle accident, and stenosis of the right external auditory meatus 10 months after injury was noted. The meatus, filled with a cholesteatoma cyst, was stenotic. A CT scan revealed a fracture of the bony canal and a soft tissue mass at the posterior part of the external auditory canal. During the operation, a cholesteatoma cyst in a well defined cholesteatoma sac was found medial to the stenosis of the ear canal, while the tympanic membrane was intact. The second patient (22-year-old female) showed left hearing impairment 6 months after a head injury. In this patient, the external auditory meatus was also stenotic and the posterior part of the meatus was filled with a cholesteatoma cyst. A CT scan displayed these features more clearly. In both patients, the canal stenosis and cholesteatoma were removed via a postaural approach.
