DDX of gastrointestinal duplication

Approach to DDX of gastrointestinal duplication:

  • Esophageal duplication is often incidentally seen on CXR obtained for respiratory distress
  • Gastric and duodenal duplication is often detected on UGI done for feeding difficulties and vomiting
  • Ileal / jejunal duplication is often detected on prenatal US or after birth as an abdominal mass and is best investigated by US
  • Colonic / rectal duplication may present with obstructive symptoms and is best detected on MR or CT, in the absence of two anal openings