Abstract
External auditory canal cholesteatoma (EACC) is a condition characterized by periostitis of the bone of the external auditory canal. EACC is usually treated conservatively, however, some patients need surgical intervention because of invasion of adjacent structures. We examined the clinical features and surgical procedures used for treatment in 12 patients with EACC who were treated by surgery at our institution. Two patients were classified as stage III and 10 cases as stage IV, accordind to Naims’classification. Eleven cases of patients had primaly EACC, while one was a recurrent case. Six patients underwent canalplasty via a postauricular incision, one patient underwent canalplasty with tympanoplasty, two patients underwent canal wall up tympanoplasty, and three patients underwent canal wall down mastoidectomy. There were no cases of recurrence, although the follow-up period was not sufficiently long in some cases. In order to determine the extent of the cholesteatoma to select the appropriate operative procedure, preoperative CT is crucial. During the operation, it is important to drill pathological bone and smoothen the bony external auditory canal.
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