| Tumor | Number of operation | Surgical death |
| Supratentorial high-grade gliomas | 4235 | 38(0.9%) |
| Supratentorial low-grade glioma | 1738 | 2(0.1%) |
| Supratentorial meningioma | 4397 | 15(0.3%) |
| Infratentorial meningioma | 838 | 7(0.8%) |
| Supra- and Infra-tentorial meningioma | 295 | 1(0.3%9 |
| Skull base meningioma | 1313 | 15(1.1%) |
| Pituitary adenoma by craniotomy | 501 | 6(1.2%) |
| Pituitary adenoma by transsphenoidal route | 4752 | 7(0.1%) |
| Cerebellar medulloblastoma | 299 | 0(0%) |
| 4th ventricle ependymoma | 167 | 4(2.4%) |
| Acoustic Schwannoma | 2154 | 6(0.3%) |
| Craniopharyngioma by craniotomy by craniotomy | 748 | 2(0.3%) |
| Craniopharyngioma by transsphenoidal route | 133 | 0(0%) |
| Pineal tumors | 357 | 3(0.8%) |
| Metastatic brain tumors | 3543 | 25(0.7%) |
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