Dhanwant Gomez, Caroline S Verbeke, Ritu Aparajita, Krishna V Menon
Context Benign tumours of the biliary tract are an extremely rare group of neoplasms. The diagnosis of these rare tumours is established on histopathological analysis following resection. Coincidence of a biliary adenoma of the distal common bile duct and a synchronous adenocarcinoma of the periampullary duodenum has never been reported in the literature. Case report We report a case of a papillary adenoma in the common bile duct in a 75- year-old female, who had synchronous invasive adenocarcinoma of the periampullary duodenum. Conclusion Isolated papillary adenoma of the bile duct is extremely rare, and in this unusual case it coincided with a peri-ampullary duodenal adenocarcinoma. However, this is a rare instance of an incidental finding within the distal bile duct following pancreaticoduodenectomy for curative treatment of a peri-ampullary adenocarcinoma.