Methods:According to the latest theory about the anatomy of cavernous sinus,twelve operations were done to remove the tumors in cavernous sinus by extradural access.

• 方法:应用最新的海绵窦解剖理论,对12例侵入海绵窦的颅中窝肿瘤进行手术治疗,经硬膜外切除窦内肿瘤。