Needle-knife precut techniques as the initial approach for biliary cannulation: is the evidence sufficient?

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Erfan Arabpour (Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences) ;
Amir Sadeghi (Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences)

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Sadeghi A, Arabpour E, Rastegar R, et al. Impact of major duodenal papilla morphology on the outcomes of primary needle-knife fistulotomy for deep biliary cannulation. Sci Rep 2024;14:31949.
Sadeghi A, Arabpour E, Movassagh-Koolankuh S, et al. Primary needle-knife fistulotomy versus standard transpapillary technique for cannulation of long-size papilla: a randomized clinical trial. Clin Transl Gastroenterol 2024;15:e00788.
Arabpour E, Sadeghi A, Rashtchian A, et al. Impact of periampullary diverticulum and relevant cannulation techniques on the outcomes of endoscopic retrograde cholangiopancreatography: a retrospective study. BMC Gastroenterol 2025;25:665. https://doi.org/10.1186/s12876-025-04251-w