Differential diagnosis of gastrointestinal duplication

• Esophageal duplication
• Gastric duplication
• Duodenal duplication
• Jejunal / ileal duplication
• Colonic duplication
• Rectal duplication

Approach to differential diagnosis 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
• Jejunal / ileal 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