Covered metal stents for management of inoperable malignant colorectal strictures

Comparison of uncovered stent with covered stent for treatment of malignant colorectal obstruction

“…14,15 Improvement of devices such as hydrophilic elastic guidewire and a reformed stent delivery system increased the technical success rate. [15][16][17] We used 0.035-inch Teflon biliary guidewire (Zebra), and our technical success rate was comparable with recent published reports. [15][16][17] We compared the technical success, clinical efficacy, and complication rate according to stent types, covered and uncovered.…”

“…[15][16][17] We used 0.035-inch Teflon biliary guidewire (Zebra), and our technical success rate was comparable with recent published reports. [15][16][17] We compared the technical success, clinical efficacy, and complication rate according to stent types, covered and uncovered. Technical and clinical success rates were not significantly different in the 2 groups.…”

“…11 The strong expanding property of covered Niti-S stents may contribute a higher incidence of migration compared with previous reports. 13,17,22 One case of colon perforation happened immediately after stent insertion. Intraperitoneal free air was found on a routine plain film in an asymptomatic patient.…”

“…[14][15][16][17] Initial studies reported a success rate of about 80%. The common cause of insertion failure was the inability of the guidewire to traverse the stricture and stiffness of stent delivery systems.…”

Clinical Application of Self-Expandable Metallic Stent for Treatment of Colorectal Obstruction Caused by Extrinsic Invasive Tumors

“…Generally, covered stents may be superior in preventing tumor growth in patients who require long-term colonic decompression but inferior in preventing stent migration because they are less embedded into the walls of the lumen compared with uncovered stents. 21,[27][28][29][30][31][32] Comparing the success rate of stenting and complications according to stent type (covered vs. uncovered) in our study, the technical success rate was higher with uncovered stents. However, two covered stents that failed technically developed from immediate stent migration and technical problems unrelated to the stent type.…”