Cholangioscopy-Assisted Laser Lithotripsy versus Electrohydraulic Lithotripsy (EHL) for Difficult Bile Duct Stones

Introduction: Although large biliary stones often require electrohydraulic lithotripsy (EHL), or holmium laser lithotripsy (LL), there have been very few studies comparing two methods. The purpose of this study was to compare the efficacy and safety of LL and EHL using cholangioscope.