['Reduced muscle density is associated with an increased risk of postoperative complications. We examined the prognostic value of muscle density as a predictor of postoperative complications in elderly patients undergoing surgery for colorectal cancer.', 'Patients (≥70 years) who underwent surgery for colorectal cancer between 2006 and 2013 were selected from a prospective single centre database. The Hounsfield Unit Average (HUA or HU/mm', 'A total of 373 patients (median age\xa0=\xa078 years) were included in this study. The mean muscle density score was 24.5\xa0±\xa04.3\xa0HU/mm'] Is lower muscle density associated with major postoperative complications in older patients after surgery for colorectal cancer?