A new technique for endoscopic implantation and explantation of large-bore biliary endoprostheses in patients with non-surgical common bile duct obstruction.

A new system for endoscopic implantation and explantation of large-bore biliary endoprostheses is presented. This technique permits corrective placement of prostheses dislodged during implantation, as well as explantation and replacement through the biopsy channel of the endoscope in a single sitting. The method has been successfully employed in 10 patients.