title: Megalencephaly secondary to occlusion and stenosis of sigmoid sinuses.
abstract: Bilateral, idiopathic, essentially asymptomatic but hemodynamically significant stenosis or occlusion of the sigmoid sinuses is extremely rare. We report a child with the angiographic features of occlusion of the right sigmoid sinus and severe stenosis on the contralateral side, presenting with megalencephaly and a cranial bruit. Cranial computed tomographic scans demonstrated increased subarachnoid spaces and borderline ventricular enlargement.
authors.affiliation: Division of Pediatric Neurology, University of Minnesota Medical School, Minneapolis.
authors.forename: D
authors.initials: D
authors.lastname: Talwar
authors.forename: M J
authors.initials: MJ
authors.lastname: Schwartzman
authors.forename: R E
authors.initials: RE
authors.lastname: McGeachie
mesh_terms: D001157:Arterial Occlusive Diseases / Q000150:complications* / Q000000981:diagnostic imaging; D001927:Brain Diseases / Q000209:etiology*; D002550:Cerebral Veins / Q000000981:diagnostic imaging; D002561:Cerebrovascular Disorders / Q000150:complications* / Q000000981:diagnostic imaging; D002675:Child, Preschool; D006801:Humans; D008297:Male; D011859:Radiography