Aim: To investigate the influence of a screening program on the short-term outcome of patients undergoing surgery for colorectal cancer.Methods: Between April 2010 and December 2012 patients diagnosed with colorectal cancer via the screening program (n = 80) were compared with patients diagnosed elsewhere (n = 106). Only patients of ≥ 50 and ≤ 69 years of age diagnosed outside the program were selected as controls. The clinical variables included age, sex, American Society of Anesthesiologists (ASA) status, Charlson index, preoperative hemoglobin and serum albumin levels, surgical approach, tumor location and stage, perioperative transfusion and postoperative morbidity. A multivariate analysis was used to identify variables independently associated with outcome.Results: There were no significant differences with regard to age, sex and ASA status. Preoperative hemoglobin (14.1 ± 1.6 g/ dl vs 12.3 ± 2.3 g/dl; p < 0.001) and serum albumin (4.45 ± 0.26 g/dl vs 4.0 ± 0.6 g/dl; p < 0.001) levels were significantly higher in the screening group. The overall morbidity was significantly lower in the screening group (38.8% vs 63.2; p < 0.001) and mainly related to a higher rate of Clavien-Dindo grade II complications in controls. There were no differences with regard to wound infection, postoperative ileus, anastomotic leakage or reoperations. The median length of hospital stay was shorter in the screening group (6 vs 9 days; p = 0.003). Multivariate analysis showed that diagnosis outside the screening program, type of surgical procedure, open surgery and Charlson index were independent risk factors for postoperative complications.Conclusions: The diagnosis of colorectal cancer via the screening program is associated with a lower rate of postoperative minor complications and a shorter hospital stay.

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