室管膜瘤是儿童中第三常见的脑肿瘤。室管膜瘤的颅外转移极为罕见。一名21个月大的日本男孩被诊断为因后颅窝脑肿瘤而脑死亡。未进行肿瘤手术切除。二十七个月后，他出现了一颗躯干皮下肿瘤，经病理学诊断为后颅窝室管膜瘤A组。我们观察到了脑肿瘤的颅内复发，对左眼眶进行了侵袭，并在他去世前发现了肝脏中的一种新生肿瘤。该病例提示后颅窝室管膜瘤A组可以颅外转移至多种器官。 版权所有 © 2023 Wolters Kluwer Health，Inc。保留所有权利。

Ependymoma is the third most common brain tumor in children. Extracranial metastases of ependymomas are uncommon. A 21-month-old Japanese boy was diagnosed to be brain dead due to a posterior fossa (PF) brain tumor. Surgical resection of the tumor was not performed. Twenty-seven months later, he developed a truncal subcutaneous tumor, which was pathologically diagnosed as PF ependymoma group A. We observed the intracranial recurrence of the brain tumor, an invasion to the left orbit, and a neoplasm in his liver before he died. This case suggests that PF ependymoma group A can metastasize extracranially to various organs.Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.