Biliary Cannulation During Endoscopic Retrograde Cholangiopancreatography: Precut Versus Conventional Cannulation

Endoscopic sphincterotomy is now an established method for removal of common bile duct calculi and treatment of papillary stenosis, the sump syndrome and certain cases of ampullary carcinoma. It is also generally performed prior to biliary stent placement .Anatomical variations, papillary stenosis, impacted stones, ampullary tumors, duodenal diverticula, and post-gastrojejunostomy states are some of the reasons behind difficult common bile duct (CBD) cannulations . In these situations, the success of CBD cannulation can be enhanced slightly by using the various accessories designed for this purpose.The aim of this study is to prospectively compare conventional approach and needle knife fistulotomy in cannulation of ampulla of Vater during endoscopic retrograde cholangiopancreatography regarding procedure-related complications as failure of cannulations, bleeding and perforation and postoperative complication