Cases with seizures
| Phenytoin | Valproate | Total | |
|---|---|---|---|
| Preoperative | 11 | 12 | 23 |
| Simple partial | 2 | 2 | 4 |
| Generalised | 9 | 9 | 18 |
| Simple partial and generalised | 0 | 1 | 1 |
| Postoperative | 7 (2) | 7 (3) | 14 (5) |
| Simple partial | 3 (1) | 2 (1) | 5 (2) |
| Generalised | 2 (1) | 4 (2) | 6 (3) |
| Simple partial and generalised | 2 (0) | 1 (0) | 3 (0) |
| Pathology associated with postoperative seizures: | |||
| Malignant glioma | 2 (1) | 3 (0) | 5 (1) |
| Metastasis | 2 (1) | 0 | 2 (1) |
| Low grade glioma | 1 (0) | 1 (1) | 2 (1) |
| Meningioma | 0 | 1 (1) | 1 (1) |
| Neurocytoma | 1 (0) | 0 | 1 (0) |
| Cavernoma | 0 | 1 (1) | 1 (1) |
| Traumatic head injury | 1 (0) | 0 | 1 (0) |
| Aneurysm ant comm artery | 0 | 1 (0) | 1 (0) |
The number of patients with postoperative seizures who also had preoperative seizures are shown in parentheses.