originally developed for retained or newly formed common bile duct stones in patients with previous cholecystectomy , the procedure is now also used to remove common duct stones in high-risk patients with an intact gallbladder , to relieve the obstruction of papillary stenosis and to provide palliation in patients with juxta-ampullary neoplasms .
C0008320
cholecystectomy
C0016976
gallbladder