颅内脑膜瘤颅外转移罕见,作者报告一例骨转移病例。男性37岁,1978年1月因头痛,左面轻瘫,双侧视乳头水肿。CT 扫描见一肿瘤起于中颅凹底,呈均一强化。手术切除肿瘤,病理诊断为成血管细胞型脑膜瘤。1979年6月与1980年6月先后二次因肿瘤复发再次手术,1982年2月始发生进行性右上臂及右肋部剧痛。胸片示右第9肋骨中段骨破坏,并见一胸膜外软组织块影。右肩X 线片示肱骨干上段骨破坏,内侧骨皮质中断。骨扫描于肋骨、肱骨骨破坏区有同位索聚集现象。活检病理证实为转移性脑膜瘤。虽然脑膜瘤组织学上具有良性特征,但局部可恶变,侵犯血管、骨胳和肌肉,远处 Intracranial meningiomas extracranial metastasis rare, the authors report a case of bone metastases. Male 37 years old, January 1978 due to headache, left paralysis, bilateral papilledema. See a tumor from the CT scan of the tumor in the concave base, was uniformly enhanced. Surgical removal of the tumor, the pathological diagnosis of hemangioblastic meningioma. In June 1979 and June 1980, there were two recurrences due to tumor recurrence, and the progressive right upper arm and right rib pain occurred in February 1982. Chest radiograph showed the middle of the ninth right rib bone destruction, and see an extrapleural soft tissue block shadow. The right shoulder X-ray showed damage to the upper humeral bone segment, the medial cortical bone was interrupted. Bone scan in the ribs, humeral bone destruction area has the phenomenon of homoplasia. Biopsy confirmed as metastatic meningioma. Although meningiomas histologically benign, but the local malignant transformation, invasion of blood vessels, bones and muscles, distant