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Open-Access Journal
Editorial
Routine surveillance endoscopy before and after sleeve gastrectomy? 
Radwan Kassir, Rani Kassir, Bénédicte Deparseval, Sarah Bekkar, Chloé Serayssol, Olivier Favre, Pierre-Philippe Garnier 
World J Gastrointest Endosc 11(1):1-4. Published online Jan 16, 2019. doi: 10.4253/wjge.v11.i1.1
Review
Difficult biliary cannulation: Historical perspective, practical updates, and guide for the endoscopist 
Rani Berry, James Y Han, James H Tabibian 
World J Gastrointest Endosc 11(1):5-21. Published online Jan 16, 2019. doi: 10.4253/wjge.v11.i1.5
Minireviews
Pancreatoscopy: An update 
Luca De Luca, Alessandro Repici, Adea Koçollari, Francesco Auriemma, Mario Bianchetti, Benedetto Mangiavillano 
World J Gastrointest Endosc 11(1):22-30. Published online Jan 16, 2019. doi: 10.4253/wjge.v11.i1.22
Role of digital single-operator cholangioscopy in the diagnosis and treatment of biliary disorders 
Petko Karagyozov, Irina Boeva, Ivan Tishkov 
World J Gastrointest Endosc 11(1):31-40. Published online Jan 16, 2019. doi: 10.4253/wjge.v11.i1.31
Retrospective Study
Early vs late endoscopic retrograde cholangiopancreatography in patients with acute cholangitis: A nationwide analysis 
Ramzi Mulki, Rushikesh Shah, Emad Qayed 
World J Gastrointest Endosc 11(1):41-53. Published online Jan 16, 2019. doi: 10.4253/wjge.v11.i1.41
Case Report
Truth lies below: A case report and literature review of typical appearing polyps yet with an atypical diagnosis 
Aaron Fisher, Edward Yousif, Marc Piper 
World J Gastrointest Endosc 11(1):54-60. Published online Jan 16, 2019. doi: 10.4253/wjge.v11.i1.54
Tertiary stent-in-stent for obstructing colorectal cancer: A case report and literature review 
Giuseppe Vanella, Chiara Coluccio, Emilio Di Giulio, Daniela Assisi, Rocco Lapenta 
World J Gastrointest Endosc 11(1):61-67. Published online Jan 16, 2019. doi: 10.4253/wjge.v11.i1.61