Histopathologic diagnosis distributed by tumor grade
| Histology | Grade II | Grade III | Grade IV | Total |
|---|---|---|---|---|
| Astrocytomas | 18 (15.1%) | 9 (7.6%) | 92 (77.3%) (GBM) | 119 (73.5%) |
| Oligodendrogliomas | 10 (37.03%) | 17 (62.97%) | 27 (16.7%) | |
| Oligoastrocytomas | 4 (25%) | 3 (18.8%) | 9 (56.3%) (GBM-O) | 16 (9.9%) |
| Total | 32 (19.8%) | 29 (17.9%) | 101 (62.3%) | 162 (100%) |