Extracranial cerebrovascular disease.
D001766:Blindness / Q000209:etiology; D002539:Cerebral Arterial Diseases / Q000150:complications / Q000473:pathology / Q000601:surgery; D002536:Cerebral Arteries / Q000033:anatomy & histology / Q000502:physiology; D002561:Cerebrovascular Disorders; D006801:Humans; D002546:Ischemic Attack, Transient; D013349:Subclavian Steal Syndrome