Survival Impact of Postoperative Skeletal Muscle Loss in Gastric Cancer Patients Who Underwent Gastrectomy

Kazuya Kuwada, Satoru Kikuchi, Shinji Kuroda, Ryuichi Yoshida, Kosei Takagi, Kazuhiro Noma, Masahiko Nishizaki, Shunsuke Kagawa, Yuzo Umeda, Toshiyoshi Fujiwara

Research output: Contribution to journalArticlepeer-review


Background/Aim: It has recently been recognized that preoperative sarcopenia contributes to postoperative complications and overall survival in gastric cancer (GC). However, few studies have investigated the relationship between postoperative skeletal muscle loss (SML) and survival in GC, despite the inevitability of body weight loss after gastrectomy in most GC patients. Herein, we studied the impact of postoperative SML on GC prognosis. Patients and Methods: A total of 370 patients with GC who underwent curative gastrectomy were retrospectively evaluated in this study. Postoperative SML was assessed on computed tomography (CT) images taken before surgery and 1 year after surgery. The impact of postoperative SML on survival was evaluated. Results: Postoperative severe SML was significantly associated with presence of comorbidities, higher tumor stage, higher postoperative complication rate and longer hospital stay. Univariate and multivariate analyses of prognostic factors for overall survival revealed that SML was an independent indicator of poor prognosis, along with age, tumor stage, preoperative sarcopenia, and operation time (hazard ratio, 2.65; 95% confidence interval, 1.68-4.20, p<0.0001). There was a strong association of severe postoperative SML with decreased overall survival in patients with preoperative sarcopenia. Conclusion: To improve the prognosis of GC patients after surgery, it is important to prevent postoperative SML as well as preoperative sarcopenia. Perioperative multimodal interventions including nutritional counseling, oral nutritional supplements, and exercise are required to prevent SML after gastrectomy.

Original languageEnglish
Pages (from-to)223-230
Number of pages8
JournalAnticancer research
Issue number1
Publication statusPublished - Jan 2023


  • gastrectomy
  • Gastric cancer
  • sarcopenia
  • skeletal muscle loss

ASJC Scopus subject areas

  • Oncology
  • Cancer Research


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