Portal de Periódicos da CAPES

P11.08: Prenatal diagnosis of a vein of Galen aneurysmal malformation

2004; Wiley; Volume: 24; Issue: 3 Linguagem: Inglês

10.1002/uog.1535

1469-0705

Mariano Barreiro, M. M. Mesquita, C. Dias, Lucas Antônio Miranda Ferreira, F. Taborda, A. Ferreira,

Vascular anomalies and interventions

Vein of Galen aneurysmal malformations are rarely seen intracranial malformations. They represent less than 1% of the cerebral arteriovenous malformations. Fetal manifestations have included nonimmune hydrops, hydrocephalus, and intracranial hemorrhage. Prenatal diagnosis of this rare arterio-venous fistula is suspected when intracerebral hypoechoic cyst is found in which blood flow can be demonstrated by Doppler ultrasound. This is one of the few conditions where Doppler ultrasound is critical for the diagnosis. We report a case of an aneurysm of the vein of Galen detected by color Doppler ultrasound at 24 weeks' gestation. Magnetic resonance imaging was performed after ultrasound and revealed significant cardiomegaly. Pregnancy was terminated because the presence of cardiomegaly suggested that high-output cardiac failure was already present, and, therefore, these cardiovascular features predicted a poor fetal outcome. The fetopathologic exam confirmed the diagnosis.