Duodenal Duplication

  • Etiology: abnormal budding of gastrointestinal tract lined with GI epithelium, may communicate with enteric lumen proper
  • US: cystic lesion with echogenic rim sign = enteric signature = hyperechoic inner layer of cyst representing bowel mucosa

Cases of Duodenal Duplication

UGI of duodenal duplication
3 lateral images from an UGI show persistent narrowing of the second portion of the duodenum caused by a round extrinsic mass.