[Long-Term Outcomes of Self-Expandable Metallic Stents as a Bridge to Surgery for Obstructive Colorectal Cancer of Stage Ⅱ and Ⅲ-A Propensity-Score Analysis].

Bridge to surgery(BTS)using a self-expandable metallic stent(SEMS)for the treatment of obstructive colorectal cancer (CRC)improves the patient's quality of life. However, its long-term outcomes remain controversial. The aim of this study was to clarify the outcomes of SEMS as a"bridge to surgery"(BTS)for obstructive CRC of Stage Ⅱ and Ⅲ by one-to-one propensity-score matching. This retrospective cohort study was conducted at a triple center from January 2013 to December 2020. Patients with obstructive CRC underwent primary resection as a normal course(NC)or placement of a SEMS as a BTS. They were divided into SEMS and NC groups, and their short- and long-term outcomes were compared. Overall, 208 patients with obstructive CRC of Stage Ⅱ and Ⅲ were evaluated(SEMS group: 104, NC group: 761). The 2 groups showed no significant differences in perioperative outcomes. The 5-year overall survival was not significantly different between groups(77.8% vs 80.4%, p=0.422). As a BTS, the use of SEMS for obstructive CRC of Stage Ⅱ and Ⅲ is effective with at least equivalent short- and long-term outcomes.