TABLE 1. Classification of focal cortical dysplasia.
This table illustrates the last classification system reported by the International League Against Epilepsy in 2011, adapted to the current knowledge of the pathogenesis of FCD6; 8.
| Focal cortical dysplasias due to developmental disturbances |
| Type I (dyslamination) |
| Ia. Abnormal radial lamination |
| Ib. Abnormal tangential lamination |
| Ic. Abnormal radial and tangential lamination |
| Type III (associated pathology) |
| IIIa. Hippocampal sclerosis |
| IIIb. Tumors associated with epilepsy |
| IIIc. Vascular malformations |
| IIId. Other principal lesions during early life |
| Cortical dysgenesis with abnormal cell proliferation without neoplasia |
| Type II (dyslamination with dysmorphic neurons) |
| IIa. Large, dysmorphic neurons |
| IIb. Large, dysmorphic neurons and balloon cells. |