CEACAM5 and colorectal carcinoma: In the univariate analysis (Table 3), age ≥ 70 years (p = 0.027), pathological stage of CRC (p = 0.019), disease‐free interval (p = 0.026), prior extrathoracic metastasis (p = 0.005), preoperative CEA level (p = 0.020), and number of metastases (p = 0.011) were prognostic factors that significantly influenced survival (Figures 1, 2, 3).