Megalencephaly secondary to occlusion and stenosis of sigmoid sinuses.
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.
Talwar
D
D
Division of Pediatric Neurology, University of Minnesota Medical School, Minneapolis.
Schwartzman
M J
MJ
McGeachie
R E
RE
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