Bowel Obstruction Secondary to Spontaneous Knot Formation of Ventriculoperitoneal Shunt.

Ventriculoperitoneal (VP) shunts are frequently placed for the treatment of hydrocephalus. Shunt complications are a common occurrence typically involving infection, disconnections, or blockages. Abdominal complications involving the intraperitoneal portion of the catheter are rare. Spontaneous peritoneal knot formation involving the bowel with subsequent obstruction is even rarer. Spontaneous knot formation of a VP shunt is also not commonly seen in the adult population. In this report, we present the case of an 18-year-old male with cerebral palsy and hydrocephalus requiring VP shunt placement who developed a spontaneous knot leading to bowel obstruction requiring emergency laparoscopic surgery.