Electrohydraulic lithotripsy under double-balloon endoscope–assisted?direct cholangioscopy for treatment?of?choledocholithiasis in a patient with Roux-en-Y?gastrectomy

摘要

Electrohydraulic lithotripsy (EHL) has been effective forfragmentation of large bile duct stones, but it requiresdirect visualization of the bile duct. A double-balloon endoscope (DBE) facilitates access to the biliary system in patients with surgically altered anatomy, and the feasibilityof DBE-assisted cholangioscopy with use of an ultraslimupper endoscope has been reported. Herein, we presenta case in which multiple bile duct stones were successfullyremoved by EHL under DBE-assisted direct transpapillarycholangioscopy.