title: The mucosal rosette: a peri-ampullary pseudotumour within a duodenal diverticulum.
abstract: Two cases are described in which a filling defect within a duodenal diverticulum was suggestive of a peri-ampullary neoplasm. In each case direct inspection showed no abnormality. It is suggested that the radiological findings are caused by prominent mucosal folds around the diverticular neck.
authors.affiliation: Department of Radiology, Wellington Hospital, New Zealand.
authors.forename: P R
authors.initials: PR
authors.lastname: Bellamy
mesh_terms: D000368:Aged; D014670:Ampulla of Vater / Q000000981:diagnostic imaging*; D002758:Cholangiography; D003138:Common Bile Duct Neoplasms / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D004240:Diverticulum / Q000000981:diagnostic imaging*; D004378:Duodenal Diseases / Q000000981:diagnostic imaging*; D006801:Humans; D007413:Intestinal Mucosa / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged