Postoperative skeletal muscle loss as a prognostic indicator of clinical outcomes in patients with gastric cancer: a systematic review and meta-analysis.

Background: A decrease in skeletal muscle mass is frequently observed during the perioperative period in patients with gastric cancer (GC) and is strongly associated with postoperative complications and poor long-term survival outcomes. Relevant research indicates that a certain proportion of patients with GC experience skeletal muscle mass loss after surgery. Therefore, a systematic review and meta-analysis was conducted to assess postoperative skeletal muscle loss as a prognostic marker for clinical outcomes in patients with GC.