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脑膜瘤发生肿瘤周围脑水肿(PTBE)的确切发病机制仍不清楚。作者对134例136个颅内脑膜瘤的脑血管造影进行回顾性分析。对受影响的皮层静脉、Sylvian静脉、桥静脉、深静脉、穿髓静脉和硬膜静脉窦进行评价分析。依据术前CT扫描测量肿瘤容积,肿瘤/PTBE容积比(水肿指数ET)和水肿部位。统计分析结果表明,脑膜瘤周围水肿发生率和平均EI与无引流静脉受阻(对照组)无差异,特别是病变累及皮层静脉、桥静脉和硬膜静脉窦的瘤周水肿发生率不高。
The exact pathogenesis of meningiomas with tumor-surrounding brain edema (PTBE) remains unclear. The authors retrospectively analyzed cerebral angiography in 134 patients with 136 intracranial meningiomas. The affected cortical veins, Sylvian veins, bridge veins, deep veins, medulla veins and dural venous sinus were evaluated. Tumor volume, tumor / PTBE volume ratio (edema index ET) and edema area were measured by preoperative CT scan. Statistical analysis showed that there was no difference in the incidence of edema around the meningioma, mean EI and obstruction of the non-drainage vein (control group). Especially, the incidence of peritumoral edema in the cortical, bridging and dural venous sinuses was not high.