[Extracranial metastases of brain tumors--a case report and survey of patients with extracranial metastasis sampled from a report on pathological autopsy cases in Japan].

A 36-year-old man who suffered from recurrence of hemangiopericytoma originating in the cerebellar tentorium and multiple extracranial metastasis over 14 years was reported. Analysis of the 104 cases of extracranial metastasis sampled from the Annual of the Pathological Autopsy Cases in Japan revealed that the frequency of extracranial metastasis is 3.8% of all brain tumors. Extracranial metastasis was frequently found in medulloblastoma, glioblastoma multiforme, malignant meningioma and ependymoma. Organs of frequent metastasis were the lung, bone, liver, pleura, and kidney. Bone metastasis was especially frequent in the vertebra.