Table 3. Japanese Pediatric Brain Tumor Study Group Classification
| Prognostic Group | Tumor Type |
| Good | Germinoma, pure |
| Mature teratoma | |
| Intermediate | Germinoma with syncytiotrophoblastic giant cells |
| Immature teratoma | |
| Mixed tumors mainly composed of germinoma or teratoma | |
| Teratoma with malignant transformation | |
| Poor | Choriocarcinoma |
| Embryonal carcinoma | |
| Mixed tumors composed of choriocarcinoma, yolk sac tumor, or embryonal carcinoma | |
| Yolk sac tumor |
