Focal cortical dysplasia type III Focal cortical dysplasia type IIIa 2018-09-16T11:16:43Z true true FCD Type IIIA (Cortical Lamination Abnormality in the Temporal Lobe Associated with Hippocampal Sclerosis) http://www.case.edu/EpSO.owl#FocalCorticalDysplasiaTypeIIIA FCD Type III describes FCD that occurs in combination with hippocampal sclerosis (FCD Type IIIa), with glioneuronal tumors (FCD Type IIIb), adjacent to vascular malformations (FCD Type IIIc) or in association with lesions acquired in early life, such as a previous ischemic injury (FCD Type IIId). A subtype of focal cortical dysplasia type III that is characterized by alterations in architectural organisation (cortical dyslamination) or cytoarchitectural composition (hypertrophic neurons outside Layer 5) in patients with hippocampal sclerosis (HS, syn. Ammon's horn sclerosis). https://www.ncbi.nlm.nih.gov/pubmed/31085954 peter