[Spontaneous umbilical fistula as a complication of ventriculo-peritoneal shunt: case report].

We report a rare case of a spontaneous umbilical fistula as a complication of ventriculo-peritoneal shunt. A 36 year-old male was admitted our hospital complaining serous discharge from the umbilicus. Two years before admission, he underwent ventriculo-peritoneal shunt for the hydrocephalus due to right hypertensive intracranial hematoma and intraventricular hemorrhage. A shuntgraphy was done and it revealed the cerebrospinal fluid leakage from the umbilicus through an urachal remnant. The abdominal shunt tube was removed at the surgery, and the patient was discharged uneventfully without shunt revision. The possible etiology of this rare complication in this case was supposed to be due to the persistence of the urachus.