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| Brain tumor | No chemotherapy | Chemotherapy | Total | |
| Atypical rhabdoid teratoid brain tumor | N | 0 | 1 | 1 |
| % | 0% | 100% | 100% | |
| Glioma | N | 25 | 23 | 48 |
| % | 52.10% | 47.90% | 100% | |
| Medulloblastoma | N | 2 | 26 | 28 |
| % | 7.10% | 92.90% | 100% | |
| Anaplastic ependymoma | N | 4 | 4 | 8 |
| % | 50% | 50% | 100% | |
| Sialoblastoma | N | 0 | 1 | 1 |
| % | 0% | 100% | 100% | |
| Other tumors of the brain and spine | N | 4 | 2 | 6 |
| % | 66.70% | 33.30% | 100% | |
| Total | N | 35 | 57 | 92 |
| % | 38% | 62% | 100% | |
