Which scope is appropriate for endoscopic retrograde cholangiopancreatography after Billroth II reconstruction: An esophagogastroduodenoscope or a colonoscope?

Figure 3 A case from the colonoscopy group. A: The papilla of Vater was difficult to observe in the front; B: The papilla was positioned at 6 o’clock; C: A common bile duct stone was confirmed by cholangiography; D and E: Endoscopic papillary large balloon dilation was performed after endoscopic sphincterotomy; and F: Common bile duct stones were removed.