真正发生转移的脑膜瘤罕见,自1880年以来,仅报告110例,其转移发生率不到1％。作者报告3例,男性2例,女性1例,年龄50～56岁。原发部位分别为矢旁区、鼻部和蝶翼部。三例均有多次局部复发,并分别发生肺、颅内和下颌骨之远隔部位转移,尸检或活检为良性脑膜瘤。作者指出,成血管细胞型比其它类型脑膜瘤颅外转移的发病率较高,可视为潜在恶性肿瘤。脑膜瘤转移到各部位的发病率为:肺60％,腹(主要为肝)34％,颈淋巴 Meningiomas that are truly metastatic are uncommon and only 110 have been reported since 1880, with less than a 1% incidence of metastases. The authors report 3 cases, 2 males and 1 female, aged 50 to 56 years. The primary sites were the paravertebral area, nose and butterfly wing. All three cases had multiple local recurrences, and distant metastasis of lung, intracranial and mandible occurred respectively. The autopsy or biopsy was benign meningioma. The authors point out that hemangioblast types have a higher incidence of extracranial metastases than other types of meningioma and may be considered as potential malignancies. The incidence of meningioma metastasis to various parts of the lung: 60%, abdominal (mainly liver) 34%, neck lymph