Biliary endoscopic sphincterotomy: Techniques and complications

Figure 1 Needle knife sphincterotome was used for endoscopic sphincterotomy over a plastic stent inserted into the common bile duct in a patient with an altered anatomy. A: A juxtapapillary diverticula is seen in a patient with Billroth II gastrectomy; B: A 7Fr-plastic stent is inserted to the common bile duct after cannulation; C-E: Sphincterotomy is performed step wise with a needle knife sphincterotome over the plastic stent; F: Common bile duct stone is extracted with a basket catheter.