Abstract
Laparoscopic resection for obstructive colon cancer (CC) after insertion of self-expanding metallic stents (SEMSs) is reportedly difficult. However, this has not yet been thoroughly investigated. Therefore, we investigated the influence of SEMS insertion on laparoscopic resection. This retrospective comparative study included 87 patients with obstructive left-sided CC (December 2011-December 2019). Patients were assigned to two groups based on elective laparoscopic surgery for (1) obstructive CC necessitating emergent decompression with SEMS insertion (SEMS group) and (2) obstructive CC without emergent decompression (control group). The SEMS group had a longer operation time (283.3 ± 79.3 min vs 222.2 ± 79.4 min, P = 0.002) and greater blood loss (204.8 ± 417.6 mL vs 53.7 ± 166.1 mL, P = 0.029) on univariate analysis; however, in multiple linear regression analysis, SEMS was not an independent risk factor for both operation time (Δ operation time 25.5 min: P = 0.19) and blood loss (Δ blood loss 33.6 mL: P = 0.58). The complication rate based on Clavien-Dindo grade II did not differ significantly (17% vs 20%, P = 1.00), whereas the rates of conversion to laparotomy (17% vs 2%, P = 0.016) and stoma creation (26% vs 2%, P = 0.001) were higher in the SEMS group. In oncological outcomes, there was no intergroup difference in the 5-year disease-free survival (80.0% vs 72.2%, P = 0.76) and overall survival (100% vs 86.3%, P = 0.25). Laparoscopic surgery after SEMS for left-sided CC is demanding due to higher conversion rates to open surgery. However, this study also revealed that it is as safe as laparoscopic surgery for cases without SEMS because of comparable complication rate and long-term outcomes.
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