Univariate analyses showed that the OS was correlated with tumour size (P =.003), tumour differentiation (P =.019), T stage (P =.008), TNM stage (P =.006), lymph node metastasis (P =.006), CD86 protein expression (P =.001), CD163 protein expression (P =.001), co‐expression of CD68 and CD86 (P =.011) and co‐expression of CD68 and CD163 (P =.023) (Table 2). This evidence concerns the gene CD163 and neoplasm.