| Approaches | Radicality of tumor removal | |||
| Totally | Subtotally | Partially | Overall | |
| Transcallosal | 16 (34%) | 24 (51.1%) | 7 (14.9%) | 47 (100%) |
| Transcortical | 18 (40%) | 22 (48.9%) | 5 (11.1%) | 45 (100%) |
| Bifrontal | 8 (36.4%) | 11 (50%) | 3 (13.6%) | 22 (100%) |