Hydrocephalus owing to ventriculoperitoneal shunt dysfunction.

A 43-year-old woman presented to our hospital with headache accompanied with nausea and intermittent vomiting without abdominal pain. The patient had undergone ventriculoperitoneal shunt placement for hydrocephalus owing to quadrigeminal cistern arachnoid cyst. Cranial computed tomography demonstrated enlarged bilateral ventricles, and the abdominal radiograph demonstrated a reverse U-shaped catheter that seemed to have been fractured in the left peritoneal cavity.