Outcomes of endoscopically inserted self-expandable metal stents in XXXX according to the type of stent and the site of obstruction.

@entity5 @entity1 @entity356 @entity344
BACKGROUND/AIMS: Self-expandable metal stents (SEMSs) can be used for the palliation of @entity344 . This study assessed the feasibility and efficacy of endoscopically inserted SEMSs for the palliation of @entity5 in the stomach and duodenum. METHODS: Between January 2011 and April 2014, 220 @entity1 with @entity356 due to @entity5 underwent endoscopic SEMS insertion at Asan Medical Center. The associations of technical/clinical outcomes and complications with the type of stent and site of obstruction were analyzed. RESULTS: The 220 @entity1 included 125 @entity1 (56.8  %) and 95 @entity1 (43.2  %); median @entity1 age was 63  years. Fully covered, partially covered, and uncovered SEMSs were inserted into 16, 77, and 120 @entity1 , respectively. Obstructions were located in the gastric outlet, including the duodenal bulb, in 106 @entity1 , and in the duodenal second and third portions in 114 @entity1 . Technical success was achieved in 213 of 220 @entity1 (96.8  %) and clinical success in 184 of 213 (86.4  %). Clinical success rates were similar to the type of stent, but were significantly greater for gastric outlet (95/104, 91.3  %) than for duodenal (89/109, 81.7  %) obstructions (p  =  0.039). Stent migration was observed in 20 @entity1 (9.1  %) and stent obstruction in 51 (23.2  %). Rates of stent migration were significantly higher for fully covered (6/16, 37.5  %) than for partially covered (7/77, 9.1  %) and uncovered (7/120, 5.8  %) SEMSs (p  <  0.001) and were significantly higher for gastric outlet (16/104, 15.4  %) than for duodenal (4/109, 1.2  %) obstructions (p  =  0.003). Rates of stent obstruction were similar for fully covered (2/16, 12.5  %), partially covered (17/77, 22.1  %), and uncovered (32/120, 26.7  %) SEMSs (p  =  0.409) and in @entity1 with gastric outlet (26/104, 25.0  %) and duodenal (25/109, 22.9  %) obstruction (p  =  0.724). CONCLUSIONS: SEMS selection for @entity344 depends on the site of obstruction.
