Table 2.
Number of patients with tumors of different histological types and non-tumorous lesions
| Histological diagnosis and WHO grade | Total | Under age of 15 | 15–21 years |
|---|---|---|---|
| Histological diagnoses | |||
| Pilocytic astrocytoma I | 6 | 3 | 3 |
| Astrocytoma II | 6 | 3 | 3 |
| Pleomorphic xanthoastrocytoma II | 1 | 1 | 0 |
| Astrocytoma III | 4 | 2 | 2 |
| Oligoastrocytoma III | 2 | 0 | 2 |
| Glioblastoma IV | 2 | 1 | 1 |
| Medulloblastoma IV | 4 | 2 | 2 |
| Atypical teratoid rhabdoid tumor IV | 2 | 2 | 0 |
| Ependymoma II | 1 | 1 | 0 |
| Ependymoblastoma IV | 1 | 1 | 0 |
| DNT I | 1 | 1 | 0 |
| Desmoplastic infantile ganglioglioma I | 1 | 0 | 1 |
| Non-tumor lesions | 8 | 0 | 8 |
| Total | 39 | 17 | 22 |