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研究SimPson一级切除突面脑膜瘤术后复发的原因。方法：通过突面脑膜瘤全切术后复发患者的临床、增强MRI、头CT及病理结果和手术切除范围等因素来分析术后肿瘤复发的原因。结果：脑膜瘤细胞沿硬脑膜浸润的范围较CT和增强MRI显示的范围广，术中切除硬脑膜范围不够是术后肿瘤复发的根本原因。结论：在SimPson一级切除基础上，切除增强MRI显示的硬脑膜尾征十0．3cm或不具备硬脑膜尾征的肿瘤累及硬脑膜区域以外0．5cm的硬脑膜和静脉窦，才能有效地阻止肿瘤的复发。
To study the reason of recurrence after SimPson primary resection of sudden meningiomas. Methods: The causes of postoperative recurrence of tumor were analyzed by clinical, MRI, CT, pathology and surgical resection in patients with recurrent meningioma after total resection. Results: The range of invasion of meningioma along the dura mater was more extensive than that of CT and enhanced MRI. The lack of adequate excision of the dura mater was the root cause of postoperative tumor recurrence. CONCLUSIONS: On the basis of SimPson primary resection, removal of 0.3 cm of dural tail sign or excision of dural tail lesion in excised enhanced MRI involves a 0.5 cm dural and venous sinus beyond the dural area to effectively Prevent the recurrence of the tumor.