Laparoscopic intervention for late-onset perforating peritonitis due to a ventriculoperitoneal shunt: a case report and literature review.

BACKGROUND: Ventriculoperitoneal (VP) shunt placement is commonly performed to treat hydrocephalus and complications are not uncommon. We report here a case of generalized peritonitis caused by migration of the abdominal end of a VP shunt catheter into the bowel after multiple VP shunt revisions over 30 years. Laparoscopic surgery was successfully performed for the peritonitis and the VP shunt system subsequently reconstructed without complications. CASE PRESENTATION: The patient was a 49-year-old woman who had a VP shunt placed for obstructive hydrocephalus at the age of 13 years. The shunt system required seven revisions because of various malfunctions, including two occasions where a nonfunctioning shunt catheter was left inside the abdomen for safety reasons. Approximately 1 year after the seventh revision, she developed abdominal pain and fever. Abdominal computed tomography suggested that the shunt catheter had migrated into the small intestine and caused an intra-abdominal abscess. We performed emergency exploratory laparoscopy, which revealed perforation of the small intestine by the tip of a nonfunctioning shunt catheter. A growing abscess was found around the perforated intestinal wall, causing bacterial ascites. After the functioning shunt catheter was pulled out from the abdomen, the nonfunctioning catheter that had perforated the intestinal wall was removed. The functioning shunt catheter was then connected to the cerebrospinal fluid drainage system to manage her severe hydrocephalus. Finally, the contaminated abdominal cavity was copiously irrigated with saline solution and a peritoneal drain placed. Twenty-five days later, she underwent another VP shunt surgery in which a VP shunt catheter was placed. She was discharged 45 days after the surgery for peritonitis without complications. CONCLUSION: In cases of peritonitis with a history of VP shunt placement, perforation by a VP shunt catheter is possible, though rare. A delay in treatment could lead to a potentially fatal complication, such as septic shock. Laparoscopic surgery enabled a faster, more hygienic, and minimally invasive operation for managing this rare but serious complication of VP shunt placement.