title: Abnormal vascular drainage in anomalies of neuronal migration.
abstract: Four patients are presented who had apparently anomalous vascular channels that were initially erroneously interpreted as vascular malformations. These vascular channels represent the normal venous drainage of a pachygyric cortex. The recognition of this finding as a manifestation of the underlying abnormal neuronal migration is important in order to avoid further intervention in these patients.
mesh_terms: D000328:Adult; D001921:Brain / Q000002:abnormalities*; D002533:Cerebral Angiography; D002550:Cerebral Veins / Q000033:anatomy & histology*; D002648:Child; D003937:Diagnosis, Differential; D006801:Humans; D007223:Infant; D002538:Intracranial Arteriovenous Malformations / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging