Figure 11
From: Polymicrogyria: pathology, fetal origins and mechanisms
Laminar necrosis; fetus 22 weeks. a: There is a horizontal split in the cortex. The upper cortical layer above the split is mildly irregular, the lower layer has an ill-defined deep border with clusters of incompletely migrated cells merging into it. b: CD68 stain shows large numbers of macrophages in the cortex and the subcortical masses of cells.