title: A rare anatomic variant: 2 anatomically distinct major duodenal papillae.
authors.affiliation: Center for Endoscopy and Pancreatobiliary Disorders, Digestive Disease Institute, Cleveland Clinic, Cleveland, Ohio, USA.
authors.forename: Mansour A
authors.initials: MA
authors.lastname: Parsi
mesh_terms: D014670:Ampulla of Vater / Q000033:anatomy & histology*; D002760:Cholangiopancreatography, Endoscopic Retrograde; D006801:Humans; D015212:Inflammatory Bowel Diseases; D008297:Male; D008875:Middle Aged