Objectives: A minilaparotomy approach (skin incision less than 7 cm) to resection of colon cancer is technically feasible, but objective data supporting its benefit are scarce. The aim of this study was to clarify whether minilaparotomy is independently associated with a reduction in the acute inflammatory response after resection of colorectal cancer. Design: Thirty-one patients who underwent surgical resection of colorectal cancer using minilaparotomy or conventional laparotomy were included in this nonrandomized prospective study. Inflammatory responses were evaluated with serum interleukin-6 (IL-6) and C-reactive protein (CRP) levels. Results: In both the minilaparotomy and conventional laparotomy groups, serum IL-6 and CRP levels significantly increased 24 h after the operation (1POD) compared to preoperative levels (p < 0.0001 and p < 0.0001, respectively). Median serum levels of IL-6 and CRP in the minilaparotomy group were significantly lower at 1POD versus the conventional group (p = 0.0066 and p = 0.0033, respectively). Multivariate analyses showed that a smaller increase in serum IL-6 or CRP levels at 1POD [less than 75th percentile (112.9 or 10.6 mg/ml, respectively)] was independently related to only minilaparotomy. Conclusions: These data in this nonrandomized trial suggest that minilaparotomy may be independently associated with reduced inflammatory responses in colorectal cancer resection.

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