Cross-sectional area of psoas muscle as a predictive marker of anastomotic failure in male rectal cancer patients: Japanese single institutional retrospective observational study

Yusuke Mizuuchi, Yoshitaka Tanabe, Masafumi Sada, Koji Tamura, Kinuko Nagayoshi, Shuntaro Nagai, Yusuke Watanabe, Sadafumi Tamiya, Kohei Nakata, Kenoki Ohuchida, Toru Nakano, Masafumi Nakamura

Research output: Contribution to journalArticlepeer-review

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Abstract

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.

Original languageEnglish
Pages (from-to)353-361
Number of pages9
JournalAnnals of Coloproctology
Volume38
Issue number5
DOIs
Publication statusPublished - Oct 2022

All Science Journal Classification (ASJC) codes

  • Surgery
  • Gastroenterology

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