Ectopic pancreatic tissue mimicking ampullary tumor.

Ectopic pancreas is an anomaly in the fusion of the two pancreatic buds where an ectopic rest develops at a place away from the normal site. We report a 70-year-old lady who presented with obstructive jaundice; she was found to have an ampullary tumor highly suggestive of malignancy, for which she underwent pancreatico-duodenectomy. However, histology showed ectopic pancreatic tissue in the ampulla.