[Medulloblastoma with extracranial metastases--a case report (author's transl)].

A case of medulloblastoma with extracranial metastases was reported. A 20-year-old woman was operated on for cerebellar medulloblastoma twice during the past 5 years and a half. Two years after the second operation, she revealed the metastases to the cervical, axillar and inguinal lymphnodes, and to the skeletal system, such as the skull, scapula, humerus, sternum, spine, pelvis and femur. The cause of extracranial metastases in the very core in this case. While the tumor was located deep in the cerebellar hemisphere at the first operation, it spread over the cerebellar surface at the after the second operation, so that the tumor cells became infiltrative to the dura mater. Thus through lymphatic and circulatory system extracranial metastases occurred. The location of the tumor seems important in this case.