Newborn with hydrocephalus on prenatal ultrasound

US of hydranencephaly
Coronal US of the brain (above) shows only the thalamus in the midline surrounded by fluid in the supratentorial region of the brain. No discernable lateral and third ventricles are seen and no rim of cortical parenchyma could be appreciated. Sagittal US of the brain (below) shows the cerebellum to be normal in appearance.

The diagnosis was hydranencephaly.