Patient Characteristics
| Sex (n) | Initial leading symptom (n) | |||||||
| Diagnosis | Patients (n) | Mean age (y) | Male | Female | Increased ICP | Neurologic deficit | Seizure | Asymptomatic, unspecific, or incidental |
| All | 174 | 45 | 97 | 77 | 29 | 25 | 89 | 31 |
| NNLs | 25 | 48 | 18 | 7 | 2 | 8 | 6 | 9 |
| Hematoma | 4 | 57 | 4 | 0 | 2 | 1 | 1 | — |
| Demyelinating lesion | 5 | 40 | 3 | 2 | — | 4 | — | 1 |
| Abscess | 6 | 49 | 6 | 0 | — | 2 | 1 | 3 |
| Unspecific histology | 10 | 47 | 5 | 5 | — | 1 | 4 | 5 |
| Neoplastic lesions | 149 | 44 | 79 | 70 | 27 | 17 | 83 | 22 |
| Occult glioma | 4 | 46 | 0 | 4 | — | — | 4 | — |
| Glioma WHO I | 4 | 43 | 2 | 2 | 3 | 1 | — | — |
| Diffuse glioma WHO II | 73 | 41 | 38 | 35 | 13 | 8 | 44 | 8 |
| Astrocytoma II | 53 | 42 | 28 | 25 | 9 | 4 | 33 | 7 |
| Oligoastrocytoma II | 12 | 39 | 7 | 5 | 3 | 2 | 6 | 1 |
| Oligodendroglioma II | 6 | 41 | 3 | 3 | — | 2 | 4 | — |
| Ependymoma II | 2 | 23 | 0 | 2 | 1 | — | 1 | — |
| Anaplastic glioma WHO III | 47 | 42 | 25 | 22 | 6 | 5 | 27 | 9 |
| Astrocytoma III | 25 | 41 | 14 | 11 | 4 | 4 | 11 | 6 |
| Oligoastrocytoma III | 11 | 39 | 7 | 4 | — | 1 | 7 | 3 |
| Oligodendroglioma III | 11 | 49 | 4 | 7 | 2 | — | 9 | — |
| Glioblastoma WHO IV | 19 | 57 | 13 | 6 | 4 | 2 | 8 | 5 |
| Lymphoma | 2 | 62 | 1 | 1 | 1 | 1 | — | — |