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Korean Journal of Legal Medicine 2007;31(2):147-150.
Published online November 30, 2007.
The assessment of the vascular anatomy of the inferior mesenteric artery: an autopsy study.
Young Wan Kim, Young Shik Choi, Byung Ha Choi, Young Joo Kim, Dae Yeol Kim, Sung Jin Cho, Dae Joong Kim, Minseob Eom, Eung Soo Kim, Moon Hee Park
1Department of Forensic medicine, Eastern District Office, National Institute of Scientific Investigation, Wonju, Korea. cheyys@unitel.co.kr
2Department of Anatomy, Kangwon National University, Chunchon, Korea.
3Department of Pathology, Wonju College of Medicine, Yonsei University, Wonju, Korea.
Abstract
AIMS: The left colon receives its arterial supply from the inferior mesenteric artery (IMA). The detailed anatomical understanding of IMA is important for sigmoid colon or rectal cancer surgery. The aim of this study is to investigate the vascular anatomy of the IMA by measuring the distance from the aortic bifurcation and the length of the IMA in autopsy cases. METHODS: 41 consecutive autopsy cases were enrolled prospectively. 29 cases were males and 12 females. Mean age was 47.7+/-15.6 with a range of 12 to 82 years. The distance from the aortic bifurcation is measured between the angle of abdominal aortic bifurcation and the inferior margin of the IMA. The length of the IMA is measured between the root of the IMA and the proximal border of the first branch of the IMA. Mann-Whitney U test, Pearson's correlation coefficient, and Spearman's rho were used for statistical analysis. RESULTS: The distance from the aortic bifurcation ranged from 3 to 6.3 cm with a mean of 4.4+/-0.71 cm. The length of the IMA ranged from 2.5 to 7 cm with a mean of 4+/-0.8 cm. The distance from the aortic bifurcation and the length of the IMA had no correlations with subject's height and weight. CONCLUSIONS: The vascular anatomy of the IMA in the general population is an important information for colorectal surgeon. Clear anatomical understanding of IMA may help perform oncologically safe colorectal surgery.
Key Words: Inferior mesenteric artery, surgery, colon, rectum, autopsy
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