Ileal 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
  • Tc-pertechnetate scan: may contain gastric mucosa so may be visible
  • Clinical: commonest location of enteric duplication (35%)

Cases of Ileal Duplication

US of ileal duplication cyst
Transverse (above) and sagittal (below) US of the abdomen shows a cystic abdominal mass with an echogenic central rim.