[Treatment of petrosal cholesteatoma with intracranial extention].

The authors describe various methods of surgical treatment of extensive petrous pyramid cholesteatoma. The surgical technics were selected to each individual patient. The approach depended on the disease's course, the lesion extention and the ear functional state. Total removing of cholesteatoma were possible by the lateral petrosectomy or by the middle fossa approach. The authors underline that petrous cholesteatoma can develop after previous radical mastoidectomy. The origin of this type of cholesteatoma is usually supratubal recess.