School ager with ventriculoperitoneal shunt and new headache

MRI of overshunting of the lateral ventricles
Axial T2 MRI without contrast of the brain from 1 year ago (left) shows normal size of the anterior and posterior horns of the lateral ventricles. The tip of the ventriculoperitoneal shunt (not shown) was in a correct position. Axial T2 MRI without contrast of the brain from today (right) shows interval decrease in size of the anterior and posterior horns of the lateral ventricles which appear slit-like. The tip of the ventriculoperitoneal shunt (not shown) was in a correct position.

The diagnosis was ventriculoperitoneal shunt malfunction in the form of overshunting in a patient with a ventriculoperitoneal shunt.