[Spontaneous occlusion of the circle of Willis (author's transl)].
D000293:Adolescent; D000328:Adult; D002343:Carotid Artery, Internal / Q000473:pathology; D002533:Cerebral Angiography; D002536:Cerebral Arteries / Q000473:pathology; D002561:Cerebrovascular Disorders / Q000453:epidemiology / Q000473:pathology; D002648:Child; D002675:Child, Preschool; D002941:Circle of Willis; D003097:Collateral Circulation; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D009780:Occult Blood