脑膜瘤（meningioma）是中枢神经系统的常见肿瘤，约占颅内肿瘤的13％～24％，占脊髓肿瘤的25％[1]。近年来，Kleihues与Burger等[2,3]根据脑膜瘤的组织形态及生物学行为将其划分为良性（benign）、不典型性（atypical）、恶性／间变性（malignant／anaplastic）。其中绝大部分 Meningioma (meningioma) is a common tumor of the central nervous system, accounting for about 13% to 24% of intracranial tumors, accounting for 25% of spinal cord tumors [1]. In recent years, Kleihues and Burger et al [2, 3] classified meningiomas as benign, atypical and malignant / anaplastic according to their histomorphology and biological behavior. Most of them