Successful cholangioscopy-guided cannulation using a novel slim cholangioscope.

Selective biliary cannulation is a difficult step in endoscopic retrograde cholangiopancreatography. In this case video, Tanisaka and colleagues report a successful cholangioscopy-guided cannulation achieved using a novel slim cholangioscope with a 2.3-mm scope tip. Cholangioscopy-guided cannulation using this cholangioscope could be a good option in cases of difficult biliary cannulation.