What abnormalities are present on the CT brain and what is the likely cause?
The ventricles are small (slit-like) and the dural venous sinuses appear uniformly distended, but of normal density. The combined appearances suggest intracranial hypotension likely secondary to CSF overshunting via the VP shunt.
Ventriculoperitoneal (VP) shunt in situ. Slit-like 3rd and lateral ventricles. Distended dural venous sinuses, which are of normal density. Appearances suggest intracranial hypotension secondary to CSF overshunting.