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Surgical Endoscopy
Published in: Surgical Endoscopy 9/2016

01-09-2016

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

Authors: Kyoungwon Jung, Ji Yong Ahn, Hwoon-Yong Jung, Charles J. Cho, Hee Kyong Na, Kee Wook Jung, Jeong Hoon Lee, Do Hoon Kim, Kee Don Choi, Ho June Song, Gin Hyug Lee, Jin-Ho Kim

Published in: Surgical Endoscopy | Issue 9/2016

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Abstract

Background/aims

Self-expandable metal stents (SEMSs) can be used for the palliation of malignant obstruction in the upper gastrointestinal tract. This study assessed the feasibility and efficacy of endoscopically inserted SEMSs for the palliation of malignant obstruction in the stomach and duodenum.

Methods

Between January 2011 and April 2014, 220 patients with gastric or duodenal obstruction due to malignancy 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 patients included 125 men (56.8 %) and 95 women (43.2 %); median patient age was 63 years. Fully covered, partially covered, and uncovered SEMSs were inserted into 16, 77, and 120 patients, respectively. Obstructions were located in the gastric outlet, including the duodenal bulb, in 106 patients, and in the duodenal second and third portions in 114 patients. Technical success was achieved in 213 of 220 patients (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 patients (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 patients with gastric outlet (26/104, 25.0 %) and duodenal (25/109, 22.9 %) obstruction (p = 0.724).

Conclusions

SEMS selection for malignant obstruction of the upper gastrointestinal tract depends on the site of obstruction.
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Metadata
Title
Outcomes of endoscopically inserted self-expandable metal stents in malignancy according to the type of stent and the site of obstruction
Authors
Kyoungwon Jung
Ji Yong Ahn
Hwoon-Yong Jung
Charles J. Cho
Hee Kyong Na
Kee Wook Jung
Jeong Hoon Lee
Do Hoon Kim
Kee Don Choi
Ho June Song
Gin Hyug Lee
Jin-Ho Kim
Publication date
01-09-2016
Publisher
Springer US
Published in
Surgical Endoscopy / Issue 9/2016
Print ISSN: 0930-2794
Electronic ISSN: 1432-2218
DOI
https://doi.org/10.1007/s00464-015-4712-x

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