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

Figure 3 Schematic for the “needle-knife introduction of a guidewire” procedure. A: The needle tip was inserted into the orifice; B: The needle-knife cannula was placed on the minor papilla orifice; C: The guidewire was carefully advanced through the cannula until it passed the cross-point (black arrow) of the ducts of Wirsung and Santorini; D: The cannula was inserted into the capitular head of the duct of Santorini along the guidewire and advanced; E: The needle-knife was removed; F: The guidewire was left in place.