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KMID : 1141920220380050353
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Annals of Coloproctology
2022 Volume.38 No. 5 p.353 ~ p.361
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Cross-sectional area of psoas muscle as a predictive marker of anastomotic failure in male rectal cancer patients: Japanese single institutional retrospective observational study
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Mizuuchi Yusuke
Tanabe Yoshitaka
Sada Masafumi
Tamura Koji
Nagayoshi Kinuko
Nagai Shuntaro
Watanabe Yusuke
Tamiya Sadafumi
Nakata Kohei
Ohuchida Kenoki
Nakano Toru
Nakamura Masafumi
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Abstract
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Purpose: Preoperative sarcopenia worsens postoperative outcomes in various cancer types including colorectal cancer. However, we often experienced postoperative anastomotic leakage in muscular male patients such as Judo players, especially in rectal cancer surgery with lower anastomosis. It is controversial whether the whole skeletal muscle mass impacts the potential for anastomotic failure in male rectal cancer patients. Thus, the purpose of this study was to clarify whether skeletal muscle mass impacts anastomotic leakage in rectal cancer in men.
Methods: We reviewed the medical charts of male patients suffering from rectal cancer who underwent colo-procto anastomosis below the peritoneal reflection without a protective diverting stoma. We measured the psoas muscle area and calculated the psoas muscle index.
Results: One hundred ninety-seven male rectal cancer patients were enrolled in this study. The psoas muscle index was significantly higher in patients with anastomotic leakage (P<0.001). Receiver operating characteristic curve determined the optimal cut-off value of the psoas muscle index for predicting anastomotic leakage as 812.67 cm2/m2 (sensitivity of 60% and specificity of 74.3%). Multivariate analysis revealed that high psoas muscle index (risk ratio [RR], 3.933; P<0.001; 95% confidence interval [CI], 1.917?8.070) and super low anastomosis (RR, 2.792; P=0.015; 95% CI, 1.221?6.384) were independent predictive factors of anastomotic leakage.
Conclusion: This study showed that male rectal cancer patients with a large psoas muscle mass who underwent lower anastomosis had a higher rate of postoperative anastomotic leakage.
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KEYWORD
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Rectal neoplasms, Anastomotic leak, Lower colo-anorectal anastomosis, Psoas muscle index, ROC curve
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