Krisem M.Hirunpat P.Tungtrongchitr N.Mahidol University2023-06-182023-06-182023-01-01Journal of Clinical Imaging Science Vol.13 (2023)21567514https://repository.li.mahidol.ac.th/handle/123456789/85141Lemmel syndrome is a pancreaticoduodenal disease caused by compression of the mid or distal common bile duct by a periampullary diverticulum. This condition should be considered a rare complication of a duodenal diverticulum and an unusual cause of obstructive jaundice. Because of its infrequent occurrence and non-specific clinical presentation, Lemmel syndrome can mimic other conditions. We herein report the clinical and imaging findings (computed tomography, magnetic resonance imaging) of a patient who presented with intermittent abdominal pain and jaundice. Large air-filled outpouching lesions of the duodenum compressed the biliary duct, resulting in upstream biliary ductal dilatation that led to the diagnosis of Lemmel syndrome.MedicineArticleSCOPUS10.25259/JCIS_9_20232-s2.0-8516135684921565597