title: Fetal variant of circle of the Willis and bilateral symmetrical parietal stroke.
abstract: We described a rare case in which a congenital abnormal vascular structure associated with mild hyperhomocysteinemia could have caused an ischemic stroke, with an unusual localization in the border-zone of MCA and PCA. We think that the lack of compensatory flow distribution from the right vertebral artery and the right posterior communicating artery probably determined the bilateral ischemic lesions in a patient, who possibly had hypotensive crisis.
authors: Macquarie Centre for Cognitive Science (MACCS), Macquarie University, Sydney, NSW 2109, Australia. monica.ricci@mq.edu.au
authors: Monica
authors: M
authors: Ricci
authors: V
authors: V
authors: Cornacchiola
authors: M
authors: M
authors: Pigliautile
authors: S
authors: S
authors: Ercolani
authors: P
authors: P
authors: Mecocci
mesh_terms: D000368:Aged; D002941:Circle of Willis / Q000002:abnormalities* / Q000000981:diagnostic imaging; D006711:Homocystine; D006801:Humans; D020138:Hyperhomocysteinemia / Q000150:complications; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging; D010296:Parietal Lobe / Q000473:pathology*; D011859:Radiography; D020521:Stroke / Q000150:complications*
chemical_list: D006711:Homocystine