CD68 and cancer: On univariate analysis, only age (P<0.05), mGPS (P⩽0.001), TNM stage (P<0.01), tumour differentiation (P<0.05), resection margin (P<0.05), LNR (P<0.001), Klintrup–Makinen score (P<0.05) and CD68+ (P<0.10) were significantly associated with cancer-specific survival.