Table 1.
Summary of focal cortical dysplasia patient clinical features
| FCDIa (n = 15) | FCDIIa (n = 12) | FCDIIb (n = 12) | |
|---|---|---|---|
| Male/Female | 8/7 | 7/5 | 6/6 |
| Age at surgery, mean (range), years | 12.7 (1.8–27.0) | 6.3 (1.5–12) | 4.9 (1.2–8.2) |
| Seizure type, % | PS (73) | PS (67) | PS (67) |
| GTCS (47) | GTCS (50) | GTCS (42) | |
| Tonic (33) | Tonic (25) | Tonic (25) | |
| IS (20) | IS (17) | IS (25) | |
| Cortical lesion location | Frontal:5 | Frontal:5 | Frontal:6 |
| Temporal:9 | Temporal:5 | Temporal:5 | |
| Parietal:2 | Parietal:3 | Parietal:5 | |
| Occipital:3 | Occipital:2 | Occipital:2 | |
| Duration of epilepsy, mean (range), years | 8.6 (1–20.5) | 4.2 (1.0–8.0) | 3.1 (1.0–6.0) |
| Seizure frequency, mean (range), per month | 33.2 (5–85) | 52.9 (8–189) | 61.1 (19–141) |
| Postoperative outcome: Engel class, % | I: 27 | I: 33 | I: 50 |
| II: 33 | II: 42 | II: 33 | |
| III: 20 | III: 8 | III: 9 | |
| IV: 20 | IV: 9 | IV: 8 |
FCD, focal cortical dysplasia; GTCS, generalized tonic–clonic seizure; IS, infantile spasm; PS, partial seizure.