Fig. 1From: Protruded duodenal tumor arising from Santorini’s duct of the pancreas: a rare case of intraductal papillary mucinous neoplasm mimicking a duodenal polypoid tumorGastroduodenal endoscopy findings. A polypoid tumor is located at the second portion of the duodenum (a). The orifice of the major duodenal papilla is mildly enlarged, and slight mucin production is seen (b)Back to article page