Roux en Y gastric bypass and iterative intussusception at the jejuno-jejunal anastomosis: conversion into one anastomosis gastric bypass (with video). A case report

Introduction: The aim of this article is to describe a rare complication of Roux en Y gastric bypass (RYGB): recurrent intestinal intussusception of the biliary limb, and an original treatment: the removal of the jejunojejunal anastomosis with conversion into "short limb" one anastomosis gastric bypass (OAGB). Presentation of case: A 25-year-old patient underwent RYGB fashioned with a 50 cm-length biliary loop and a 150 cm-length alimentary loop. She was hospitalized other 3 times in the following months for episodes of acute abdominal pain and excessive weight loss, with CT scans showing intussusception at the jejuno-jejunal anastomosis. Conversion from RYGB to OAGB with "short biliary limb" was performed. The patient at 60-month followup has no bile reflux and regained weight. Discussion: Small bowel intussusception is a rare complication that can occur following Roux-en-Y gastric bypass (RYGB) surgery, leading to symptoms like acute or chronic abdominal pain. Treatment options reported in medical literature include resection and re-fashioning of the jejuno-jejunal anastomosis, simple reduction (with a risk of recurrence), and imbrication/plication of the jejuno-jejunal anastomosis. Given the rarity of this complication, there are no standardized recommendations, and the best treatment should be determined on a case-by-case basis, taking into consideration the patient's unique circumstances and the medical team's expertise. Conclusion: Intestinal intussusception at the jejuno-jejunal anastomosis responsible for chronic abdominal pain is a rare complication after RYGB. One of the possible treatments is conversion into OAGB.