Abstract
We report a case of osteoma of the temporal bonecausing a stenosis of the external auditory canal, whichresulting in an external ear cholesteatoma extending to theepitympanum. The patient, 51-year-old female, visited ourhospital with a complaint of left hearing impairment andotorrhea. Otoscopic findings of the left ear revealed a bone-like hard mass occupying the external auditory canal. Temporal bone CT and MRI demonstrated an osteogenictumor arising from the cortical area of the left temporalbone extending to the external ear canal. Removal of theosteogenic tumor and meatotympanoplasty were performed.
Histopathological study revealed an osteoma consistingof compact bone and spongy bone, namely a mixed typedosteoma. The postoperative course was uneventful and thehearing was improved.
