Entering the duodenal diverticulum: A method for cannulation of the intradiverticular papilla

Figure 1 The duodenal diverticulum to be located intradiverticular papilla for biliary cannulation. A: The papillary orifices can be indistinctly seen at the left side of the inner diverticular borders in patient 1 and patient 2 (arrow), but not seen at all in patient 3; B: Successful biliary cannulation was achieved after facing the intradiverticular papilla; C: Endoscopic retrograde cholangiography showing stones in the common bile duct in patient 1 and patient 2 and dilation of the common bile duct in patient 3; D: Extracted bile stones in the duodenal diverticulum in patient 1 and patient 2.