Rendezvous Concepts in Bile Duct Therapy Since 1995, all patients of the Evangelisches Krankenhaus Mülheim an der Ruhr had an intraoperative cholangiography during laparoscopic cholecystectomy. If bile duct stones were diagnosed, an intraoperative endoscopic retrograde cholangiopancreatography (ERCP) with papillotomy and extraction of the stones was done simultaneously to laparoscopic cholecystectomy. Of 276 patients 97,9% had an benefit of this single-stage procedure. When comparing the complication rate (2.17%) and the lethality (0%) in our study with those of international publications, both were found to be lower because of relaxation by general anesthesia. Due to the avoidance of therapeutic splitting, the hospitalization time and the compliance of the patients were optimized. Thus, the combination of intraoperative ERCP with laparoscopic cholecystectomy is an adequate and economic way of surgical therapy.