The endoscopic morphology of major papillae influences the selected precut technique for biliary access. Katsinelos P, Lazaraki G, Chatzimavroudis G, Zavos C, Kountouras J. Gastrointest Endosc. 2015 Apr;81(4):1056.
We read with great interest the study by Lopes et al regarding the use of early or late needle-knife fistulotomy (NKF) to achieve biliary access after unsuccessful standard biliary cannulation and its related postprocedure adverse events.


