A case of sequential occurrence of multiple intracranial mixed germ ce
ll tumors is presented. An 8-year-old boy with a cystic calcified tumo
r in the basal ganglia and an increased serum alpha-fetoprotein concen
tration was initially treated with radiotherapy. Six years later, a tu
mor composed of embryonal carcinoma and immature teratoma arose from t
he right temporo-parietal lobe. This tumor was treated successfully wi
th surgery and radiochemotherapy, The possibility of multicentricity o
r intra-axial metastasis distant from the original site during the lon
g-term course should be considered in treatment for intracranial germ
cell tumors.