Table 1.
Demographic and clinical data
| Age at diagnosis (y) | |
|---|---|
| Median | 57 |
| Range | 18–90 |
| Sex, N (%) | |
| Male | 247 (31.8) |
| Female | 532 (68.2) |
| WHO grade, N (%) | |
| I | 638 (81.9) |
| II | 119 (15.3) |
| III | 22 (2.8) |
| Locationa, N (%) | |
| Convexity | 167 (24.8) |
| Parasagittal | 131 (20.2) |
| Skull base | 260 (39.5) |
| Posterior fossa | 81 (12.3) |
| Other | 22 (3.3) |
| Maximal diameterb, mm | |
| Median | 40.0 |
| Range | 11–119 |
| Simpson gradec, N (%) | |
| 1 | 143 (30.4) |
| 2 | 221 (46.9) |
| 3 | 41 (8.7) |
| 4 | 55 (11.7) |
| 5 | 11 (2.3) |
| Multiple meningiomas. N (%) | |
| Yes | 118 (15.1) |
| No | 661 (84.9) |
| Neurological deficit before surgeryd, N (%) | |
| Yes | 379 (48.6) |
| No | 389 (51.4) |
| Outcome of neurological deficits after surgery, N (%) | |
| Recovered | 139 (36.7) |
| Residual deficit | 124 (32.7) |
| Not improved | 116 (30.6) |
| Epilepsy, N (%) | |
| Before surgery | 244 (31.3) |
| After surgery | 204 (26.2) |
| Epileptiform EEG potentials, N (%) | |
| Before surgerye | 40 (15.8) |
| After surgeryf | 78 (22.9) |
| Tumor progression, N (%) | |
| Yes | 203 (26.1) |
| No | 576 (73.9) |
aNot including patients with multiple meningiomas (N = 661).
bDocumentation available for 694 patients (CT/MRI = 631/63).
cDocumentation available for 468 patients.
dNot including headache and seizures.
eDocumentation available for 253 patients.
fDocumentation available for 340 patients.