Fig. 1From: Limited precut sphincterotomy combined with endoscopic papillary balloon dilation for common bile duct stone removal in patients with difficult biliary cannulationa Difficult biliary cannulation was due to failure of 10 attempts at duodenal papilla; (b) Limited precut sphincterotomy was performed with the extent of cutting was less than half the length of the papillary mound; (c) Common bile duct stone was found after successful biliary cannulation; (d) Endoscopic papillary balloon dilation was performed after limited precut sphincterotomy; (e and f) Common bile duct stone was extracted by retrieval balloonBack to article page