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按照WHO等级分类法,大多数脑膜瘤属Ⅰ级(良性),而Ⅱ级和Ⅲ级(恶性)大约只占脑膜瘤的7％。由于脑膜瘤呈侵润性生长,彻底手术切除通常以失败告终,尤其是好发于海绵窦、岩骨尖、后颅窝及后矢状窦的脑膜瘤,其术后极易复发,致残率也极高。当前的治疗对策旨在减压,对于部分渐进性脑膜瘤施以放疗,尽管放疗很少能使肿瘤缩小,但在数年内它能延缓肿瘤的再生或复发。
According to WHO classification, most meningiomas are grade I (benign), while grade II and III (malignancy) account for only about 7% of meningioma. Due to invasive growth of meningiomas, complete surgical resection usually ended in failure, especially in cavernous sinus, petrous apex, posterior fossa and posterior sagittal sinus meningioma, the postoperative easily relapse, disability The rate is also very high. Current treatment strategies aim at decompression and radiotherapy for some asymptomatic meningiomas. Although radiotherapy rarely reduces the size of the tumor, it can delay tumor recurrence or recurrence within a few years.