Fig. 5.

Bilateral schizencephaly (type 3). MR images of a 2-year-old child with global developmental delay. Axial T2-weighted (a, b) and coronal reconstructions from T1-weighted volume data (c–f) show bilateral CSF clefts with non-opposed borders lined with polymicrogyria. The septum pellucidum is absent and the fornices lie abnormally low (arrowed on c–f). Extensive cortical formation abnormalities were present in both hemispheres