title: Annular pancreas associated with duodenal carcinoma.
abstract: Annular pancreas (AP) is a rare congenital anomaly. Coexisting malignancy has been reported only in a few cases. We report what is, to the best of our knowledge, the first case in the English literature of duodenal adenocarcinoma in a patient with AP. In a 55-year old woman with duodenal outlet stenosis magnetic resonance cholangiopancreatography showed an aberrant pancreatic duct encircling the duodenum. Duodenojejunostomy was performed. Eight weeks later she presented with painless jaundice. Duodenopancreatectomy revealed a duodenal adenocarcinoma, surrounded by an incomplete AP. Thus, co-existent malignancy with AP can be present without obstructive jaundice and without being visible through preoperative diagnostics.
authors.affiliation: Department of Surgery, University of Basel, CH-4031 Basel, Switzerland. broennimannen@uhbs.ch
authors.forename: Enrico
authors.initials: E
authors.lastname: Brönnimann
authors.forename: Silke
authors.initials: S
authors.lastname: Potthast
authors.forename: Tatjana
authors.initials: T
authors.lastname: Vlajnic
authors.forename: Daniel
authors.initials: D
authors.lastname: Oertli
authors.forename: Oleg
authors.initials: O
authors.lastname: Heizmann
mesh_terms: D000230:Adenocarcinoma / Q000150:complications / Q000473:pathology*; D049448:Cholangiopancreatography, Magnetic Resonance; D004379:Duodenal Neoplasms / Q000150:complications / Q000473:pathology*; D004380:Duodenal Obstruction / Q000209:etiology / Q000473:pathology / Q000601:surgery; D004386:Duodenum / Q000473:pathology / Q000601:surgery; D005260:Female; D006801:Humans; D041781:Jaundice, Obstructive / Q000209:etiology / Q000473:pathology / Q000601:surgery; D008875:Middle Aged; D010179:Pancreas / Q000002:abnormalities*; D016577:Pancreaticoduodenectomy