Objective:The aim of this study is to explore the clinical characteristics,diagnostic methods,surgical procedures and results of typesⅡ to Ⅳexternal auditory canal cholesteatoma.Method:In the 63 cases,there were 39 patients suffering typeⅡexternal auditory canal cholesteatoma,22 patients suffering type Ⅲ and 2 patients suffering typeⅤ.All patients had surgeries to remove the lesion under the microscope,and underwent canaloplasty or tympanoplasty or modified mastoidectomy as well.Result:There were 2 cases oc...