PMC3275479_01
Prenatal ultrasound at 37 weeks gestation shows triventricular hydrocephalus, suggesting obstruction at the aqueduct of Sylvius.
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PMC3275479_01_1752-1947-6-7-1.jpg
F1
At 37 weeks, the maternal abdominal girth exceeded the expected range, and a second ultrasound revealed interval development of congenital hydrocephalus (Figure 1).
Postnatal T1-weighted axial and sagittal MRI with gadolinium at three days of life demonstrates a patent aqueduct of Sylvius, but a developmental venous anomaly (white arrow) extending from the left thalamus converging on a central draining vein bridges across the proximal orifice of the aqueduct of Sylvius and obstructs the aqueduct.
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PMC3275479_01_1752-1947-6-7-2.jpg
F2
An MRI of the brain corroborated hydrocephalus with the presence of a DVA within the third ventricle (Figure 2).