Expandable metal stents for the treatment of colonic obstruction: techniques and outcomes

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

“…[5][6][7] SEMS can be used as a palliative treatment and, before surgery, for 1-stage operation, without emergency colostomy for colorectal obstruction. [7][8][9][10][11] SEMS can be classified into 2 types: uncovered and covered. Both types of stents have their own merits and demerits.…”

“…Covered SEMS can prevent tumor ingrowth and have a relatively high incidence of stent migration. [10][11][12][13] Since Dohmoto 7 reported the first case of colonic stent placement, colonic stent placement has become a popular procedure. Most previous reports presented the success rates, durability, and complication of colorectal stent placement with uncovered stents.…”

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.…”

“…[19][20][21][22][23][24] Whereas the most common etiology of technical failure was generally the inability to pass the guidewire through the obstruction site in colorectal cancer, 16 the most common cause of technical failure in our series was colonic immobilization. The etiologies of immobilization were thought to be adhesions around tissue caused by the previous surgeries and peritoneal seedings, which might make negotiation of endoscope more difficult around sharply angulated, tortuous, and fixed intestinal segments.…”

Auspicious Management of a Acute Obstructive Left Colon Tumor in a 93-year-old Patient - Case Report and Literature Review

“…Sometimes after the stent is mounted, the colonic decompression may not be possible. This usually occurs to those in whom the stent does not exceed the stenosis area, in cases of synchronous lesions, initial stent migrations or fecal impaction (21).…”