迄今文献报告,在所有年龄的脑瘤中约200例发生颅外转移,儿童脑瘤颅外转移的发病率除成神经管细胞瘤外则无精确报导。本文报告某儿童医院1919～1981,21例颅外转移的脑瘤病案,它占同期917例儿童原发性脑瘤中的2.3%。在此62年中,儿童期(17岁或17岁以下)恶性肿瘤共5103例,其中原发性脑瘤为917例,占18%。 So far, the literature reports that extracranial metastases occur in about 200 brain tumors of all ages. The incidence of extracranial metastases in children brain tumors is not reported accurately except for medulloblastomas. This article reports on a case of brain tumor from extracranial metastases in a childhood hospital from 1919 to 1981, which accounted for 2.3% of 917 children with primary brain tumors in the same period. In this 62-year period, a total of 5103 malignancies in childhood (17 or under) were diagnosed, of which 917 were primary brain tumors, accounting for 18%.