Preliminary study of enteroscopy-guided, self-expandable metal stent placement for malignant small bowel obstruction.

Hyuk Lee, Jun Chul Park, Sung Kwan Shin, Sang Kil Lee, Yong Chan Lee

Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea.

Journal of gastroenterology and hepatology 2012 Jul

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Technical limitations of conventional endoscopes and delivery systems frequently hamper palliative endoscopic placement of self-expandable metal stents for malignant small bowel obstruction. This study examined feasibility of the double balloon enteroscope-guided withdrawal-reinsertion method as a rescue procedure in patients with failed palliative stent placement for malignant small bowel obstruction. We enrolled 19 consecutive patients with small bowel obstruction due to metastatic gastric (n = 15) or colorectal cancer (n = 2), or primary small bowel carcinoma (n = 2), in whom previous attempts to place self-expandable metal stents using conventional endoscopy had failed. Ten patients had undergone previous gastric surgery. After passing a guide-wire using an enteroscope with or without the double-balloon method, the enteroscope was withdrawn. A conventional endoscope was re-inserted along the guide-wire, and through-the-scope self-expandable metal stent placement was performed. Obstruction sites were efferent jejunal loop, proximal jejunum, and third duodenal portion. Technical success was achieved with 94.7% (18/19) of stents, and clinical success occurred with 84.2% (16/19) of patients. The gastric outlet obstruction score (pre-procedure: 0.68 ± 0.58) increased by one week (2.05 ± 0.52, P < 0.001). Stent migration and restenosis occurred in two (10.5%) and four (21.1%) of 19 stents, respectively. Median stent patency duration was 67 days and median survival was 93 days; these did not differ significantly by palliative chemotherapy (P = 0.76 and 0.67, respectively). The double-balloon enteroscopy-guided method followed by conventional endoscopic self-expandable metal stent delivery was effective for rescue palliation of malignant small bowel obstruction. © 2012 Journal of Gastroenterology and Hepatology Foundation and Blackwell Publishing Asia Pty Ltd.

Citation

Hyuk Lee, Jun Chul Park, Sung Kwan Shin, Sang Kil Lee, Yong Chan Lee. Preliminary study of enteroscopy-guided, self-expandable metal stent placement for malignant small bowel obstruction. Journal of gastroenterology and hepatology. 2012 Jul;27(7):1181-6