title: [The diagnosis of vascular micromalformations in the brain].
abstract: Ninety cases with cerebrovascular micro-malformations were analyzed. These abnormalities amount to 5.3% of the total number of patients with arteriovenous malformation. These include various vascular defects from 0.5 to 1.0 cm. Most of them run as strokes (80%); the others have a pseudotumorous course. Angiography reveals 60.5% of cerebrovascular micro-malformations. In other cases they are undetectable or their identification requires functional and gross angiography. Computed tomography and magnetic resonance tomography reveal intracranial hemorrhages from cerebrovascular micro-malformations, without identifying the latter. They cannot differentiate a tumor from parenchymatous hemorrhages from cerebrovascular micro-malformations in 37.7%. The greater diagnostic difficulties arise in subtentorial cerebrovascular micro-malformations having a pseudotumorous course. In these cases they are angiographically invisible, and CT (MRT) diagnosis prior to surgery is a volumetric brain formation, providing no specification of the process.
authors.forename: Iu M
authors.initials: IuM
authors.lastname: Filatov
authors.forename: T M
authors.initials: TM
authors.lastname: Vikhert
authors.forename: E I
authors.initials: EI
authors.lastname: Gaĭtur
authors.forename: L V
authors.initials: LV
authors.lastname: Shishkina
mesh_terms: D000293:Adolescent; D000328:Adult; D001921:Brain / Q000098:blood supply / Q000000981:diagnostic imaging / Q000473:pathology; D002533:Cerebral Angiography; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000175:diagnosis* / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D008833:Microcirculation / Q000002:abnormalities / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed
vernacular_title: Diagnostika sosudistykh mikromal'formatsiĭ golovnogo mozga.