Abstract:Objective To explore clinical strategy of a difficult selective biliary cannulation for patients having unintentional pancreaticduct cannulationduring endoscopic retrograde cholangiopancreatography (ERCP).Methods Retrospective analysis on clinical data of 63 ERCP patients having difficult selective biliary cannulation has been carried out. Patients are divided into three groups according to different methods of bile duct intubation: double guidewire group, precut pancreatic duct group, and pancreatic duct stent. We observe the success rate of bile duct intubation, the time of cannulation and the occurrence rate of postoperative complicationsin each group.Results The total success rates of cannulation in the three groups was 96.8%. The time of cannulation in the double guidewire group, pancreatic duct pre-incision group and pancreatic duct stent group were were (70.7 ± 28.6) s, (116.6 ± 43.2) s and (129.1 ± 88.2) s, respectively. There was a progressive and significant difference among all groups (P < 0.05). The total incidence of hyperamylasemia was 39.3% in post-ERCP. The hyperamylasemia in pancreatic duct pre-resection group were significantly higher than the other groups (P < 0.05); The total incidence of post-ERCP pancreatitis (PEP) was 21.3%, the PEP in pancreatic duct group was significantly higher than other two groups (P < 0.05); The Total bleeding rate was 6.6% in post-ERCP group. No severe pancreatitis or duodenal perforation occurred.Conclusion The methods of guidewire-precut pancreaticduct-pancreatic duct stent were safe and feasible, and has a high success rate in selective bile duct cannulation in ERCP.