Clinical outcomes of stenting for colorectal obstruction at a tertiary centre.

Purpose: Self-expandable metal stents (SEMS) have been used to manage large bowel obstruction as a palliative treatment or to initially decompress the colon as a bridge to definitive surgery. Our goal was to review clinical outcomes in patients undergoing placement of a SEMS for colorectal obstruction at a tertiary care hospital.

Methods: A retrospective review was done of patients undergoing placement of a colorectal SEMS at a single centre between August 2005 and March 2011 for obstructing lesions. Outcomes identified included clinical relief of obstruction, successful bridging to surgery or palliation, and stent-related complications.

Results: SEMS were placed in a total of 58 patients. The intent of stenting was to bridge to definitive surgery in 11 patients and palliation in 47 patients. Stent placement was clinically successful in relieving obstruction without early complication in 45 (78%) patients. Of the patients intended to bridge to surgery, 7/11 (64%) were successfully bridged to surgery. One patient suffered a perforation, two failed to relieve obstruction, and one re-obstructed. Of the patients stented for palliation, 32/47 (68%) were successfully palliated at a mean follow-up of 7.5 months. Five patients had perforations, six re-obstructed, two had stent migration, and two failed to relieve obstruction. The overall rates for perforation, re-obstruction, and stent migration were 10, 12, and 7%, respectively.

Conclusion: SEMS placement as a bridge to surgery and for palliation of colorectal obstruction is associated with moderate rates of clinical success but a high rate of perforation.