Table 4.
Distribution of adult brain tumors according to the WHO Classification of CNS tumors
| Diagnosis | WHO Grade 1 n (%) | WHO Grade 2 n (%) | WHO Grade 3 n (%) | WHO Grade 4 n (%) | Total N (%) |
|---|---|---|---|---|---|
| Meningioma | 97 (75.8) | 9 (31) | 1 (33.3) | 0 (0) | 107 (47.8) |
| Glioma | 7 (5.5) | 19 (65.5) | 1 (33.3) | 43 (67.2) | 70 (31.3) |
| Brain metastasis | 0 (0) | 0 (0) | 0 (0) | 17 (26.6) | 17 (7.6) |
| Pituitary adenoma | 11 (8.6) | 0 (0) | 0 (0) | 0 (0) | 11 (4.9) |
| Hemangioblastoma | 8 (6.3) | 0 (0) | 0 (0) | 0 (0) | 8 (3.6) |
| Craniopharyngioma | 4 (3.1) | 0 (0) | 0 (0) | 0 (0) | 4 (1.8) |
| Medulloblastoma | 0 (0) | 0 (0) | 0 (0) | 3 (4.7) | 3 (1.3) |
| Ependymoma | 0 (0) | 1 (3.4) | 1 (33.3) | 0 (0) | 2 (0.9) |
| Hemangiopericytoma | 1 (0.8) | 0 (0) | 0 (0) | 0 (0) | 1 (0.4) |
| Lymphoma | 0 (0) | 0 (0) | 0 (0) | 1 (1.6) | 1 (0.4) |
| Total | 128 (100) | 29 (100) | 3 (100) | 64 (100) | 224 (100) |