Successful removal of intracavernous neurinoma originating from the oculomotor nerve--case report.

An oculomotor neurinoma was confirmed intraoperatively to be located in the lateral wall of the cavernous sinus in a 55-year-old male. By protruding into the true venous cavity, it caused obliteration of the blood flow in the cavernous sinus. The tumor was totally removed without entering the true venous cavity of the cavernous sinus. The cavernous sinus was closed by suturing the dural membrane to the thin fibrous membrane, preventing intraoperative bleeding.