<unk>  series (AP and lateral x=rays of skull, AP x-rays of chest and abdomen)
Consider CT head
24% of patients with documented<unk>  malfunction may show no radiologic evidence of the malfunction on plain films or CT
Ventriculoperitoneal shunt mechanical failure
Ventriculoperitoneal shunt obstruction
Ventriculoperitoneal shunt complications
Ventriculoperitoneal shunt overdrainage 
Ventriculoperitoneal shunt overdrainage
Ventriculoperitoneal shunt infection
Brain herniation syndromes
Deep brain stimulator complications