• Jérôme Bot, Guillaume Piessen, William B Robb, Vianney Roger, and Christophe Mariette.
• Department of Digestive and Oncological Surgery, University Hospital Claude Huriez, Centre Hospitalier Régional Universitaire, Lille, France.
• Dis. Colon Rectum. 2013 May 1;56(5):568-76.

BackgroundPatient and technical factors influencing postoperative infectious complications after elective colorectal resections for cancer are well described. Tumor related factors, however, have not been extensively evaluated.ObjectiveThis study aimed to measure the effect of tumor stage on postoperative surgical site and extra surgical site infections after elective colorectal cancer resection.DesignThis was a retrospective matched-cohort analysis of prospectively gathered data.SettingsThe study was conducted in a tertiary referral center and a private hospital specializing in colorectal surgery.PatientsBetween 2004 and 2011, 740 consecutive patients underwent elective resection for colorectal cancer in 2 centers. Patients undergoing resection for advanced tumors (group A, ≥ stage IIB, n = 177) were matched to randomly selected patients with localized disease (group L, Main Outcome MeasuresWe compared 30-day infectious complications rates between patients with advanced (group A) and localized (group L) tumors. Multivariable logistic regression analysis was performed to identify risk factors for infectious complications.ResultsGroup A had a higher overall rate of IC (44.6 vs 25.4 %, p < 0.001), with a higher risk of infectious complications at both the resection site (p < 0.001) and distant to the resection site (p = 0.015). Independent risk factors for infectious complications were advanced tumors (OR = 2.70; p < 0.001), obesity (OR = 1.89; p = 0.018), malnutrition (OR = 2.22; p = 0.008), and open rather than laparoscopic procedure (OR = 5.11; p < 0.001).LimitationsThis study is limited by its retrospective methodology.ConclusionAdvanced tumors increase the risk of infectious complications after colorectal resection, with other risk factors including malnutrition, obesity, and resection by laparotomy. Optimization of modifiable risk factors through nutritional repletion and the choice of a minimally invasive operation should be considered.

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