What is your diagnosis of this 36 week old fetus with cardiomegaly?
History: Our patient presented at 36 weeks gestation. Ultrasound images show the fetus with cardiomegaly, a dilated right atrium and right ventricle with mild tricuspid regurgitation.
Fetal echo images 1 and 2 show tricuspid regurgitation.
Four chamber view showing dilated right side chambers
The biparietal section reveals hydrocephalic dilatation of the lateral ventricles with a large midline aneurysmally dilated draining vein.
BPD section reveals ventriculomegaly and dilated midline cystic structure.
There was also mild polyhydramnios.
What is your diagnosis?
The answer to our DailyDx:
Vein of Galen malformation leading to cardiac failure. View power Doppler images 5 and 6 showing the vein of Galen malformation.
Image 6 3D power Doppler view showing vein of Galen malformation
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