1　临床资料患者男性 ,34岁 ,歼 7飞行员 ,飞行时间 1780h ,平素身体健康。在改装高性能战斗机体检时进行的X线拍片和CT检查发现椎管内占位病变 ,位于C7～T1水平髓外硬膜下 ,大小约 0 8cm× 1cm× 1cm ,无明显症状及体征。入院时查体 :一般状况佳 ,四肢活动自如 ,神经系统未 1 clinical data of patients male, 34 years old, J-7 pilots, flight time 1780h, usually healthy. In the modified high-performance fighter examination conducted X-ray film and CT examination found lesions in the spinal canal, located in C7 ~ T1 level extramedullary dura mater, about the size of 0 8cm × 1cm × 1cm, no obvious symptoms and signs. Physical examination on admission: the general condition is good, extremities activities freely, the nervous system is not