Focal cortical dysplasia type III Focal cortical dysplasia type IIIc 2018-09-16T11:23:39Z A subtype of focal cortical dysplasia type III that is characterized by alterations in architectural (cortical dyslamination, hypoplasia) or cytoarchitectural composition of the neocortex (hypertrophic neurons), which occur adjacent to vascular malformations (cavernomas, arteriovenous malformations, leptomeningeal vascular malformations, telangiectasias, meningioangiomatosis).