title: Papillary adenoma of the distal common bile duct associated with a synchronous carcinoma of the peri-ampullary duodenum.
abstract: BACKGROUND
  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 peri-ampullary duodenum has never been reported in the literature.
  
  
  METHODS
  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 peri-ampullary duodenum.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Division of Surgery, The Leeds Teaching Hospitals NHS Trust. Leeds, United Kingdom.
authors.forename: Ritu
authors.initials: R
authors.lastname: Aparajita
authors.forename: Dhanwant
authors.initials: D
authors.lastname: Gomez
authors.forename: Caroline S
authors.initials: CS
authors.lastname: Verbeke
authors.forename: Krishna V
authors.initials: KV
authors.lastname: Menon
mesh_terms: D000236:Adenoma / Q000473:pathology*; D000368:Aged; D002277:Carcinoma / Q000473:pathology* / Q000601:surgery; D003135:Common Bile Duct / Q000473:pathology*; D003138:Common Bile Duct Neoplasms / Q000473:pathology*; D004379:Duodenal Neoplasms / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D033162:Incidental Findings; D009378:Neoplasms, Multiple Primary / Q000473:pathology*; D016577:Pancreaticoduodenectomy