A Rare Case of Intraparenchymal Cerebrospinal Fluid Cyst Associated With Ventriculoperitoneal Shunt in an Adult Patient.

Here we are reporting a rare phenomenon associated with ventriculoperitoneal (VP) shunt in the adult patient, namely, the development and finding of intraparenchymal pericatheter cerebrospinal fluid cyst. Our patient had a VP shunt placed for idiopathic intracranial hypertension 16 years ago before presentation to the hospital. The patient was admitted to the hospital for headache for past three weeks with the initial CT scan showing encephalomalacia and vasogenic edema.