Fibrous dysplasia of the temporal bone.

A 38-year-old woman with fibrous dysplasia of the entire right half of the mandible and the right temporal bone is presented. She had a unilateral progressive conductive hearing loss and stenosis of the auditory canal complicated by a chronic external otitis, a hidden cholesteatoma, destruction of the ossicles and an impending facial palsy. Surgery was performed to create a new auditory canal, to eradicate the cholesteatoma and to decompress the facial nerve from the surrounding fibrous dysplasia.