Long standing biliary colic masking chylous ascites in laparoscopic roux-en-Y gastric bypass; a case report.

Background: Chylous ascites is considered to be an intra-abdominal collection of creamy colored fluid with triglyceride content of > 110 mg/dL. Chylous ascites is an uncommon but serious complication of numerous surgical interventions. However, it is a rare complication of LRYGB. An internal hernia limb defect is thought to be the underlying etiology, where the hernia will cause lymphatic vessel engorgement and lymphatic extravasation.

Case Presentation: We report a case of a 29 years old male with a 9 year history of laparoscopic Roux en y gastric bypass (LRGYB), presenting with recurrent abdominal pain for 2 months radiating to the right shoulder. Ultrasound examination revealed gallstones and the patient was subsequently admitted for laparoscopic cholecystectomy. Intraoperatively, whitish colored fluid, high in triglycerides content was aspirated. During exploration, an internal hernia limb defect was found and corrected.

Conclusion: Post LRGYB patients with symptoms of recurrent abdominal pain should be suspected for chylous ascites reflecting an internal hernia.