Covered versus uncovered self-expandable metal stents for malignant biliary obstruction: a randomized, controlled study / 中华消化内镜杂志

ABSTRACT

Objective To compare therapeutic efficacy and safety of covered and uncovered self-expandable metal stents for malignant biliary obstruction.Methods From October 2010 to August 2012,patients with unresectable malignant biliary obstruction were recruited and divided into 2 groups to receive covered metal stents (group A) or uncovered metal stents (group B).Efficacy and complication of the procedure were compared.Results A total of 81 patients were recruited,with 41 in group A and 40 in group B.Stents were placed successfully in all patients.The median patency time of stent in group A was 182.5 d,which was not significantly different from that of group B (195.0 d,P =0.616).Complications occurred in 3 patients of group A (7.3％) and 4 of group B (10％).Conclusion Covered and uncovered metal stents are both safe and effective for treatment of malignant biliary obstruction with same patency time.