Abstract

BackgroundSarcopenia consists of two dysregulation patterns of body composition, myopenia and myosteatosis. The aim of this study is to compare the preoperative status of various body composition indexes including our newly developed modified intramuscular adipose tissue content (mIMAC) to investigate these clinical values in esophageal cancer patients. MethodWe assessed preoperative psoas muscle mass index (PMI), IMAC, and mIMAC in 150 esophageal cancer patients. ResultsPreoperative high IMAC and low mIMAC status were significantly associated with older age. Preoperative decreased mIMAC was significantly associated with advanced T classification and the presence of distant metastasis and low preoperative mIMAC was an independent prognostic factor for poor overall survival and disease-free survival in esophageal cancer patients. Combined assessment of preoperative mIMAC with PMI could help stratify risk for oncological outcomes. Finally, preoperative PMI and mIMAC were positively correlated with various nutritional factors in esophageal cancer patients. ConclusionCombined assessment between preoperative PMI and mIMAC could stratify risk for oncological outcomes, and preoperative mIMAC might be surrogate marker for aging and nutritional status in esophageal cancer patients.

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