The optimal cutoff points for DR-70 and CEA were 3 μg/mL and 5 ng/mL, respectively, which are higher than the median DR-70 and CEA concentrations in patients with adenomas in the present study (i.e., 0.8 μg/mL and 2.1 ng/mL, resp). Here, CEACAM5 is linked to adenoma.