Needle-knife precut fistulotomy (NK-F) is a well-known rescue freehand technique for
difficult biliary cannulation (DBC) during endoscopic retrograde cholangiopancreatography
(ERCP). Another type, the Iso-Tome®, is a modified precutting device with an insulated oval needle tip to prevent direct
electrical and thermal injury. However, few comparative studies of the efficacy of
these two effective precut methods in DBC have been performed. This prospective comparative
study aimed to evaluate the efficacy of the Iso-Tome® precut (IT-P) compared to NK-F in DBC.
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© 2017 Published by Elsevier Inc.
