患者男,49岁。入院前1周因反复头痛、食欲不振,MRI检查发现左侧蝶窦内致密影(图1),提示蝶窦肿瘤。在外院行经鼻中隔入路蝶窦手术,术中发现手术损伤穿通颅底,取大腿皮肤修补。术后病理报告为星型胶质瘤,术后第3天出现流清水样涕,持续2d后停止,入我院拟行术后伽玛刀治疗。入院体 Male patient, 49 years old. One week before admission due to repeated headache, loss of appetite, MRI examination found that the left sphenoid sinus dense shadow (Figure 1), suggesting sphenoid sinus tumor. In the outer line via the nasal septum into the sphenoid sinus surgery, surgical injury found through the skull base, take the thigh skin repair. Postoperative pathological report of astrocytoma, 3 days after the flow of water samples runny nose, continued for 2 days after the stop, into our hospital to be treated with gamma knife. Admission body