Inverse U form joint incision from inside and outside of the ear the auricle was overturned downwards so as to remove the tumors in the regions of the tegmen tympani and the fossa cranii media .

耳内外联合倒U形切口，将耳郭向下翻转，以处理上 鼓室 乳突 天盖、颅中窝底区病变。