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因鼻窦炎症作鼻内鼻窦手术发生脑膜损伤的发病率为0％～2．5％，若不给予修补则出现脑膜炎的发病率3％～50％。其发生随脑脊液鼻漏的时间而增加。Chandler（1983）介绍了鼻外筛窦切除术进行脑膜整复术。Boenninshaus（1974）认为鼻内途径不能提供良好的前颅底视野。近年来由于?
The incidence of meningeal damage due to sinonasal sinus surgery is 0% to 2.5%, and the incidence of meningitis is 3% to 50% unless repaired. Its occurrence increases with the time of cerebrospinal fluid rhinorrhea. Chandler (1983) introduced meningeal sinus resection for meningeal repair. Boenninshaus (1974) that the intranasal route can not provide a good anterior skull base field. In recent years due?