Cortical malformations secondary to abnormal cortical maturation after CELL MIGRATION in NEUROGENESIS. This group includes injury to the cortex during later stages of cortical development such as POLYMICROGYRIA and focal cortical dysplasias.

Synonyms: Malformations of Cortical Development, Group III, Malformations Secondary to Abnormal Postmigrational Development, Cortical Malformations, Group III, Malformations Due to Abnormal Postmigrational Development