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

Figure 2 “Needle-knife papillotomy with introduction of a guidewire, pull-sphincterotome, and guidewire” procedure. A: A small incision was made with the needle-knife (precut papillotomy); B: The needle-knife was exchanged for a pull-sphincterotome, which was used to enlarge the incision; C: A guidewire was carefully advanced into the duct of Santorini through the sphincterotome; D: Guidewire located in the duct of Santorini.