Abstract
Sarcopenic obesity (SO), which is defined as a high ratio of visceral adipose tissue to skeletal muscle, is a well-known risk factor for post-hepatectomy outcomes in patients with hepatocellular carcinoma. However, few studies have evaluated the effect of SO on postoperative outcomes in patients with hilar cholangiocarcinoma (CCC). This retrospective study aimed to evaluate the effect of preoperative SO on postoperative outcomes in patients with hilar CCC following major hepatectomy. Preoperative SO was assessed in 328 patients undergoing hepatectomy for hilar CCC at three institutions between 2006 and 2016. SO was calculated from cross-sectional visceral fat and muscle area displayed on preoperative CT imaging. Preoperative SO was present in 98 patients (29.9%). The major complication rate in patients with SO was higher than in those without SO (54.1% vs. 37.0%, p = 0.004). Additionally, postoperative hospital stays were prolonged in patients with SO (18.5 vs. 16.5 days, p = 0.038). After multivariable analysis, SO was identified as an independent risk factor for major complications after hepatectomy in hilar CCC patients (OR = 0.866, 95% CI: 1.148–3.034, p = 0.012). Careful postoperative management is needed after major hepatectomy in hilar CCC patients with SO.
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