title: [Role of vertebral artery hypoplasia in the pathogenesis of cerebral circulatory disorders].
abstract: Clinico-angiographic comparison of 30 cases of vertebral artery hypoplasia was carried out. It was found that the artery hypoplasia was often combined with a lateral shift of the artery opening, convolute shape of the major brain vessels, and functional reconstruction of the Villisian circle, a transitional type of the posterior trifurcation. It was ascertained that the vertebral artery hypoplasia, not being a pathogenetic factor itself, can play a negative role in cases of occlusion of a major brain vessel, since it limits the potentialities of compensatory blood circulation.
mesh_terms: D000328:Adult; D002340:Carotid Artery Diseases / Q000150:complications* / Q000503:physiopathology; D002343:Carotid Artery, Internal; D002533:Cerebral Angiography; D002561:Cerebrovascular Disorders / Q000209:etiology*; D003097:Collateral Circulation; D003251:Constriction, Pathologic; D006801:Humans; D006973:Hypertension / Q000150:complications; D002537:Intracranial Arteriosclerosis / Q000150:complications; D008875:Middle Aged; D014711:Vertebral Artery / Q000002:abnormalities* / Q000000981:diagnostic imaging
vernacular_title: Znachenie gipoplazii pozvonochnoĭ arterii v patogeneze narusheniia mozgovogo krovoobrashcheniia.