Histopathologic diagnosis distributed by tumor grade
| Histology | Grade II | Grade III | Grade IV | Total |
|---|---|---|---|---|
| Astrocytomas | 15 (11.9%) | 7 (5.6%) | 73 (57.9%) (GBM) | 95 (75.4%) |
| Oligodendrogliomas | 8 (6.3%) | 10 (7.9%) | 18 (14.2%) | |
| Oligoastrocytomas | 3 (2.4%) | 3 (2.4%) | 7 (5.6%) (GBM-O) | 13 (10.4%) |
| Total | 26 (20.6%) | 20 (15.9%) | 80 (63.5%) | 126 (100%) |
Note:—GBM indicates glioblastoma multiforme; GBM-O, glioblastoma with oligoastrocytoma grade IV.