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Ampullary carcinoma associated with an annular pancreas.

CONTEXT
Annular pancreas is an uncommon congenital abnormality. Co-existence of this condition with a pancreaticobiliary malignancy is an exceptionally rare occurrence.


CASE REPORT
We present a case report of a 78-year-old woman with jaundice due to an ampullary carcinoma associated with an annular pancreas treated by pancreaticoduodenectomy.


CONCLUSIONS
A collection of previously reported cases is reviewed together with the relevant literature. Obstructive jaundice is an uncommon feature of annular pancreas; hence the possibility of co-existent pancreaticobiliary malignancy should be excluded.