Covered and uncovered self-expandable metallic Hanarostents are equally efficacious in the drainage of extrahepatic malignant strictures. Results of a double-blind randomized study

References

• Andersen JR, Sorensen SM, Kruse A, Rokkjaer M, Matzen P. Randomised trial of endoscopic endoprosthesis versus operative bypass in malignant obstructive jaundice. Gut 1989;30:1132–5.
   PubMed Web of Science ®Google Scholar
• Prat F, Chapat O, Ducot B, Ponchon T, Pelletier G, Fritsch J, A randomized trial of endoscopic drainage methods for inoperable malignant strictures of the common bile duct. Gastrointest Endosc 1998;47:1–7.
   PubMed Web of Science ®Google Scholar
• Soderlund C, Linder S. Covered metal versus plastic stents for malignant common bile duct stenosis: a prospective, randomized, controlled trial. Gastrointest Endosc 2006;63:986–95.
   PubMed Web of Science ®Google Scholar
• Davids PH, Groen AK, Rauws EA, Tytgat GN, Huibregtse K. Randomised trial of self-expanding metal stents versus polyethylene stents for distal malignant biliary obstruction. Lancet 1992;340:1488–92.
   PubMed Web of Science ®Google Scholar
• Knyrim K, Wagner HJ, Pausch J, Vakil N. A prospective, randomized, controlled trial of metal stents for malignant obstruction of the common bile duct. Endoscopy 1993;25:207–12.
   PubMed Web of Science ®Google Scholar
• Yoon WJ, Ryu JK, Yang KY, Paik WH, Lee JK, Woo SM, A comparison of metal and plastic stents for the relief of jaundice in unresectable malignant biliary obstruction in Korea: an emphasis on cost-effectiveness in a country with a low ERCP cost. Gastrointest Endosc 2009;70:284–9.
   PubMed Web of Science ®Google Scholar
• Isayama H, Kawabe T, Nakai Y, Ito Y, Togawa O, Kogure H, Management of distal malignant biliary obstruction with the ComVi stent, a new covered metallic stent. Surg Endos 2010;24:131–7.
   Google Scholar
• Telford J, Carr-Locke D, Baron T, Poneros J, Bounds B, Kelsey P, A randomized trial comparing uncovered and partially covered self-expandable metal stents in the palliation of distal malignant biliary obstruction. Gastrointest Endosc 2010;72:907–14.
   PubMed Web of Science ®Google Scholar
• Neuhaus H, Hoffmann W, Dittler HJ, Niedermeyer HP, Classen M. Implantation of self-expanding esophageal metal stents for palliation of malignant dysphagia. Endoscopy 1992;24:405–10.
   PubMed Web of Science ®Google Scholar
• Im JP, Kang JM, Kim SG, Kim JS, Jung HC, Song IS. Clinical outcomes and patency of self-expanding metal stents in patients with malignant upper gastrointestinal obstruction. Dig Dis Sci 2008;53:938–45.
   Google Scholar
• Suk KT, Kim HS, Kim JW, Baik SK, Kwon SO, Kim HG, Risk factors for cholecystitis after metal stent placement in malignant biliary obstruction. Gastrointest Endosc 2006;64:522–9.
   PubMed Web of Science ®Google Scholar
• Kahaleh M, Tokar J, Conaway MR, Brock A, Le T, Adams RB, Efficacy and complications of covered Wallstents in malignant distal biliary obstruction. Gastrointest Endosc 2005;61:528–33.
   PubMed Web of Science ®Google Scholar
• Isayama H, Komatsu Y, Tsujino T, Sasahira N, Hirano K, Toda N, A prospective randomised study of “covered” versus “uncovered” diamond stents for the management of distal malignant biliary obstruction. Gut 2004;53:729–34.
   PubMed Web of Science ®Google Scholar
• Cahen DL, Rauws EA, Gouma DJ, Fockens P, Bruno MJ. Removable fully covered self-expandable metal stents in the treatment of common bile duct strictures due to chronic pancreatitis: a case series. Endoscopy 2008;40:697–700.
   PubMed Web of Science ®Google Scholar
• Pausawasadi N, Soontornmanokul T, Rerknimitr R. Role of fully covered self-expandable metal stent for treatment of benign biliary strictures and bile leaks. Korean J Radiol 2012;13:67–73.
   Google Scholar
• Kaassis M, Boyer J, Dumas R, Ponchon T, Coumaros D, Delcenserie R, Plastic or metal stents for malignant stricture of the common bile duct? Results of a randomized prospective study. Gastrointest Endosc 2003;57:178–82.
   PubMed Web of Science ®Google Scholar
• Meng B, Wang J, Zhu N, Meng QY, Cui FZ, Xu YX. Study of biodegradable and self-expandable PLLA helical biliary stent in vivo and in vitro. J Mater Sci Mater Med 2006;17:611–17.
   PubMed Web of Science ®Google Scholar
• Bang BW, Jeong S, Lee DH, Lee JI, Lee SC, Kang SG. The biodurability of covering materials for metallic stents in a bile flow phantom. Dig Dis Sci 2012;57:1056–63.
   Google Scholar
• Yoon WJ, Lee JK, Lee KH, Lee WJ, Ryu JK, Kim YT, A comparison of covered and uncovered Wallstents for the management of distal malignant biliary obstruction. Gastrointest Endosc 2006;63:996–1000.
   PubMed Web of Science ®Google Scholar
• Gomez C, Chong RL, Marcaccio F, Marcolongo M, Van Domselaar F, De Paula J, Covered vs. Uncovered Self-Expandable Metallic Stents (SEMS) for Malignant Distal Biliary Obstruction (MDBO). Gastrointest Endosc 2009;69:AB38–S1338.
   Google Scholar
• Kullman E, Frozanpor F, Söderlund C, Linder S, Sandström P, Lindhoff-Larsson A, Covered versus uncovered self-expandable nitinol stents in the palliative treatment of malignant distal biliary obstruction: results from a randomized, multicenter study. Gastrointest Endosc 2010;72:915–23.
   PubMed Web of Science ®Google Scholar
• Saleem A, Leggett CL, Murad MH, Baron TH. Meta-analysis of randomized trials comparing the patency of covered and uncovered self-expandable metal stents for palliation of distal malignant bile duct obstruction. Gastrointest Endosc 2011;74:321–7.
   PubMed Web of Science ®Google Scholar
• Krokidis M, Fanelli F, Orgera G, Tsetis D, Mouzas I, Bezzi M, Percutaneous palliation of pancreatic head cancer: randomized comparison of ePTFE/FEP-covered versus uncovered nitinol biliary stents. Cardiovasc Intervent Radiol 2011;34:352–61.
   PubMed Web of Science ®Google Scholar
• Krokidis M, Fanelli F, Orgera G, Bezzi M, Passariello R, Hatzidakis A. Percutaneous treatment of malignant jaundice due to extrahepatic cholangiocarcinoma: covered Viabil stent versus uncovered Wallstents. Cardiovasc Intervent Radiol 2010;33:97–106.
   PubMed Web of Science ®Google Scholar