【摘要】 目的　评估影响小脑幕及窦汇区脑膜瘤显微手术全切除的因素。　方法　回顾分析经显微手术治疗的小脑幕及窦汇区脑膜瘤 2 3例的临床资料及复述相关文献。　结果　手术全切除肿瘤 17例 ,次全切除 6例。在次全切除的 6例中 ,4例与颅内大静脉窦受肿瘤侵蚀 ,且存在静脉回流代偿不完全有关 ,2例同脑干、血管及脑神经与肿瘤粘连紧密或受肿瘤侵犯有关。　结论　影响小脑幕及窦汇区脑膜瘤显微外科手术全切除的主要因素是颅内大静脉窦受侵犯及静脉的回流代偿不完全、肿瘤与脑干和脑神经的紧密粘连更多还原

【Abstract】 Objective To study the factors that limited the microsurgical total resection on meningiomas of tentorium and confluence of sinuses Methods Twenty three cases of meningiomas on tentorium and confluence of sinuses,which were removed by application of microsurgery from 1983 to 2001,were analysed retrospectly and reviewed. Results In all 23 cases,tumors in 17 cases were removed totally,and 6 cases were removed subtotally In the 6 cases whose tumors were resected subtotally,there were 4 cases related with major sinus and its venous flow uncompleted compensation, 2 cases related with adhering compactly to the brain stem invaded by tumors,major vessels or cranial nerves Conclusions Heading factors restricting microsurgical total resection of menigiomas on tentorium and confluence of sinuses may be related with major sinus invaded by tumor and its venous flow uncompleted compensation, tumors adhering compactly to the brain stem,major vessels or cranial nerves更多还原