Arteriovenous malformations. Locations and evolution in the fetal brain.
Almost all cerebral arteriovenous malformations in the fetus involve the vein of Galen, although occasionally they may involve the frontal area of the brain instead. In all reported cases arteriovenous malformations have presented some time after 30 weeks as a sonolucent oval lesion located in the midline behind the third ventricle. Previous scans have been normal. Evidence of high output failure such as cardiomegaly, enlarged neck veins, or hydrops predicts a poor outcome.
Comstock
C H
CH
William Beaumont Hospital, Department of Obstetrics and Gynecology, Royal Oak, Michigan 48073.
Kirk
J S
JS
D000783:Aneurysm / Q000000981:diagnostic imaging; D002550:Cerebral Veins / Q000002:abnormalities; D004453:Echoencephalography / Q000379:methods; D005260:Female; D005315:Fetal Diseases / Q000000981:diagnostic imaging*; D005865:Gestational Age; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging; D006801:Humans; D007231:Infant, Newborn; D002538:Intracranial Arteriovenous Malformations / Q000000981:diagnostic imaging*; D011247:Pregnancy; D016216:Ultrasonography, Prenatal / Q000379:methods