DB-ERCP (Double-Balloon Endoscopy ERCP), an endoscopic treatment for hepato-pancreato-biliary diseases in patients with reconstructed intestinal tracts after gastric or pancreatic cancer surgeries, was developed by our university in 2006. It boasts one of the highest case volumes and success rates in the country. We encourage anyone who has been told that treatment is difficult or impossible to consult with us.