小脑幕脑膜瘤占颅内脑膜瘤的2%～9%,中年女性多见。临床表现没有特异性,颅内压增高和小脑共济失调是主要的临床表现,诊断主要依靠影像学。根据肿瘤分类选择手术入路是手术成功的关键。大多数肿瘤能够全切除,但是术后并发症发生率较高。肿瘤侵蚀静脉窦影响手术全切。 Cerebellar meningiomas account for 2% to 9% of intracranial meningioma, more common in middle-aged women. No specific clinical manifestations, increased intracranial pressure and cerebellar ataxia are the main clinical manifestations, the diagnosis depends mainly on imaging. Select the surgical approach according to the tumor classification is the key to successful operation. Most tumors are resectable, but the incidence of postoperative complications is high. Erosion of the sinus tumor surgery fully cut.