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A method of creation of choledochojejunoanastomosis (CJA) was developed experimentally on 12 dogs. The method lies in creation of valvular CJA using walls of the common bile duct and submucosous-mucosous membrane of the small intestine mobilized by Roux. According to this method 103 patients with obstructive jaundice due to lesion of distal part of common bile duct were operated. Postoperative complications were seen in 6 (5.8%) patients, 3 (2.9%) patients died. In the period from 3 months to 10 years after operation 63 patients were examined, there were no cases of reflux-esophangitis.

Clinico-instrumental examination of 226 patients showed that there were no fatal outcomes directly after endoscopic papillosphincterotomy, the number of complications was approximately the same as after transduodenal operations on the major duodenal papilla but they took a much easier course. The high effectiveness of an endoscopic operation was confirmed in the immediate postoperative period (absence of biliary hypertension, jaundice, pancreatitis, cholangitis). In the late-term periods after EPST restenosis was rarely encountered (3.9%); duodeno-biliary reflux caused no serious disorders, while the functional activity of the sphincter Oddi which had been operated on was partly maintained in 84.2% of patients.