The authors report their experience with 850 consecutive laparoscopic cholecystectomies performed from May 1990 to July 1997. In this series, despite a sporadic use of intraoperative cholangiography (IOC), there were no lesions of main biliary tract and there was only a biliary leaking cystic duct resolved with conservative treatment. The authors are satisfied with selective use of endoscopic cholangiography and sphincterotomy for the management of choledocholithiasis, and conclude that the use of IOC is not so essential to avoid iatrogenic lesions of main biliary tract, that could be avoid by applying a meticulous operative technique.