Shunt Überdrainage

Newborn with

a prenatal diagnosis of hydrocephalus, status post VP shunt placementInitial axial CT without contrast of the brain (above) showed marked dilation of the lateral, third and fourth ventricles. Axial CT without contrast of the brain 1 day after shunt placement (below) shows interval decompression of the ventricular system and interval development of large bilateral subdural hygromas.The diagnosis was subdural hygroma development due to over-shunting.