DO_rare_slim NCIthesaurus subcortical band heterotopia A congenital nervous system abnormality characterized by migration of neurons to ectopic locations in the brain where the neurons form areas that appear as band-like clusters of white tissue underneath the gray tissue of the cerebral cortex. UMLS_CUI:C1848201 NCI:C116933 ORDO:99796 MESH:D054221 DOID:0111169 HeCo MIM:600348 band heterotopia disease_ontology double cortex syndrome heterotopic cortex subcortical laminar heterotopia congenital nervous system abnormality