Published online Jan 16, 2014. doi: 10.4253/wjge.v6.i1.1
Revised: December 4, 2013
Accepted: December 17, 2013
Published online: January 16, 2014
Core tip: Direct peroral cholangioscopy is a valuable and economic tool for diagnostic and therapeutic applications in the biliary tree. However, solutions are needed to make access to the biliary tree easier, and to improve the endoscope stability within the biliary tree for diagnostic and therapeutic maneuvers.