CEACAM5 and neoplasm: After adjusting for age, we compared the relationship between SUVmax and EGFR mutations in different subgroups, including gender, smoking history, nodule type, shape, lobulation, burr sign, bronchial sign, vacuolar sign, pleural indentation sign, vascular bundle sign, tumor long axis (three groups), clinical stage (two groups), and CEA (three groups) (Figure 2).