title: Prenatal sonographic detection of basilar aneurysm.
abstract: Retrospective reviews document the infrequency of intracranial aneurysms in the first decade of life, with an even greater rarity in the first 2 years. Intracranial aneurysms are not known to be associated with trisomy 18. An infant is reported who was diagnosed at 32 weeks gestation as having trisomy 18. Prenatal ultrasonography identified a large cystic lesion in the posterior cerebral circulation. This small-for-gestational-age infant was born at term by dates, but renal maturation suggested a gestational age of 35-36 weeks. He survived 5 days. This is the first report of prenatal sonographic imaging of a basilar artery aneurysm confirmed by autopsy.
authors.affiliation: Department of Neurosurgery, Baylor College of Medicine, Houston, Texas 77030.
authors.forename: C A
authors.initials: CA
authors.lastname: Muszynski
authors.forename: R J
authors.initials: RJ
authors.lastname: Carpenter
authors.forename: D L
authors.initials: DL
authors.lastname: Armstrong
mesh_terms: D000328:Adult; D001488:Basilar Artery / Q000002:abnormalities* / Q000000981:diagnostic imaging; D002552:Cerebral Ventricles / Q000473:pathology; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D002538:Intracranial Arteriovenous Malformations / Q000000981:diagnostic imaging* / Q000473:pathology; D008297:Male; D011149:Pons / Q000473:pathology; D011247:Pregnancy; D011263:Pregnancy Trimester, Third; D016216:Ultrasonography, Prenatal