CEACAM5 and neoplasm: Multivariate logistic regression analysis showed that CEA (odds ratio (OR) 2.749; 95% confidence interval (CI) 1.225–6.173; P = 0.014) and tumour stage (OR 5.956; 95% CI 1.633–21.719; P = 0.007) were independent predictors of PNI status (Table 3) and were used to construct the clinical model.