CEACAM5 and neoplasm: Spearman’s correlation analysis indicated strong positive associations between plasma fibrinogen and CA19-9 (r = 0.788, p < 0.001), CEA (r = 0.787, p < 0.001), tumor stage (r = 0.509, p < 0.001), node stage (r = 0.739, p < 0.001), and metastasis stage (r = 0.384, p < 0.001), but not histological grade (r = 0.100, p = 0.322) (Fig. 1).