Table 1.
Neuropathological findings in epilepsy surgery
| Category | Numbers (%) | Age OP | Onset | Duration |
|---|---|---|---|---|
| HS | 1,908 (32.7 %) | 33.9 + 10.4 | 11.3 + 7.7 | 22.7 + 10.0 |
| Dual | 294 (5.0 %) | 25.5 + 12.8 | 9.5 + 7.8 | 15.9 + 9.9 |
| LEAT | 1,551 (26.5 %) | 27.9 + 12.3 | 16.5 + 10.1 | 11.8 + 8.8 |
| MCD | 930 (15.9 %) | 18.2 + 12.0 | 5.9 + 5.7 | 12.3 + 9.1 |
| Vascular | 328 (5.6 %) | 36.1 + 12.3 | 23.4 + 11.4 | 12.7 + 9.0 |
| Glial scars | 284 (4.9 %) | 25.6 + 12.4 | 10.3 + 8.0 | 14.7 + 8.6 |
| Encephalitis | 96 (1.6 %) | 20.4 + 12.6 | 13.3 + 9.4 | 8.2 + 7.1 |
| No lesion | 451 (7.7 %) | 29.2 + 10.8 | 12.6 + 7.7 | 16.1 + 8.0 |
| Total | 5,842 | 28.6 + 12.5 | 12.4 + 8.9 | 16.5 + 10.1 |
Data retrieved from the European Epilepsy Brain Bank
HS hippocampal sclerosis, Dual dual pathology, LEAT long-term epilepsy-associated tumors, MCD malformations of cortical development, Age OP age of patients at surgery (in years), Onset age at onset of spontaneous seizure activity (in years), Duration duration of seizure disorder before surgical treatment (in years)