Resection of Colorectal Cancer With Versus Without Preservation of Inferior Mesenteric Artery

Objective: To assess the clinical significance of preservation of the inferior mesenteric artery (IMA) in comparison with IMA ligation in surgery for sigmoid colon or rectal (colorectal) cancer. Methods: Consecutive patients (n=862) with colorectal cancer who underwent intended surgical resection of the main tumor between 1986 and 2011 were retrospectively analyzed. The patients were divided into 2 groups: IMA preserved (n=745) and IMA ligated (n=117). Results: No significant difference was observed in incidence of advanced stage III or IV disease between the 2 groups (P=0.56 and 0.51, respectively), whereas a longer operation time (287 [95 to 700] vs. 215 [60 to 900] min, respectively; P

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