CEACAM5 and neoplasm: No statistical differences, including age (p = 0.663), gender (p =0.820), smoking history (p = 0.418), tumor location (p = 0.522), radiologic lesion type (p= 0.244), tumor SUVmax (p = 0.261), carcinoembryonic antigen (CEA) (p = 0.250), and predominant subtype (p = 0.088), among the three sets were observed except for pathologic tumor size (p = 0.011) in Table 1.