Fig. 1From: Pancreas-preserving partial duodenectomy for non-ampullary duodenal neoplasms: three case reportsa Upper gastrointestinal endoscopy revealed a circumferential papillary tumor located from the duodenal bulb to the descending duodenum. b Duodenography revealed a circumferential tumor in the supra-ampullary duodenum (arrowhead)Back to article page