Table 1.
Proportions for each pathological type of refractory epilepsy in all of the cases
| Pathological type | Number of cases | Proportion (%) |
|---|---|---|
| FCD | 67 | 28.86 |
| FCD I a | 12 | 5.17 |
| FCD I b | 14 | 6.03 |
| FCD II a | 14 | 6.03 |
| FCD II b | 27 | 11.63 |
| Gyrus malformation | 4 | 1.73 |
| Hippocampal sclerosis | 13 | 5.61 |
| Tumor | 42 | 18.11 |
| Vascular malformations | 0 | 0 |
| Glial scar | 29 | 12.50 |
| Encephalitis | 27 | 11.63 |
| Tuberous sclerosis | 9 | 3.87 |
| No obvious pathological abnormality | 23 | 9.92 |
| Hydatoncus | 1 | 0.44 |
| Heterotopias | 3 | 1.29 |
| Hamartoma | 7 | 3.02 |
| Sturge–Weber syndrome | 7 | 3.02 |
| Total | 232 | 100% |