Endoscopic treatment for pancreatic diseases: Needle-knife-guided cannulation via the minor papilla

Figure 1 “Needle-knife papillotomy with introduction of a guidewire and pull-sphincterotome” procedure. A: A small incision was made with the needle-knife (precut papillotomy); B: The needle-knife was exchanged for a pull-sphincterotome with a guidewire, which was carefully advanced into the duct of Santorini through the sphincterotome; C: The sphincterotome advanced along the guidewire; D: Guidewire located in the duct of Santorini.