Highlights
Duplication cysts can occur anywhere in the gastrointestinal tract but duplication cyst within the pancreas is rare.
The most common presentation reported is abdominal pain secondary to pancreatitis.
The present case presented with abdominal pain, non-bilious vomiting and ill-defined lump in the left lumbar region.
USG showed a target sign and intussusception was suspected.
At operation, there was a thick-walled cyst in relation to tail of pancreas, covered with necrotic omentum. Histology confirmed enteric gastric duplication.