Afferent loop syndrome 7-years post Roux-en-Y gastrojejunostomy: An often-forgotten pancreatitis cause. A case report.

Afferent loop syndrome is a rare post-operative complication following upper gastrointestinal bypass surgeries, usually occurring within the first two weeks post-operation. This case report, however, outlines afferent loop syndrome almost a decade post-surgery, which was managed conservatively. A 54-year-old woman presented with a few days' history of epigastric pain, vomiting, and constipation. She had undergone a sleeve gastrectomy and was converted to a Roux-en-Y gastrojejunostomy for weight loss 9 and 7 years ago, respectively. Serum lipase was elevated at 1410 IU/L. Computed tomography showed high-grade proximal small bowel obstruction, involving the efferent and afferent loops of the Roux-en-Y gastric bypass. The patient was given intravenous rehydration, electrolyte replacement and had a nasogastric tube inserted. She was discharged on day 5 of admission without significant sequelae. Afferent limb syndrome should be considered in patients with altered upper gastrointestinal anatomy who present with pancreatitis, regardless of the time period post-operatively. Future guidelines should further more outline the factors indicated for surgical versus conservative management.