CEACAM5 and neoplasm: Although the CT findings did not suggest malignancy, the levels of tumor markers such as carcinoembryonic antigen (CEA), carbohydrate antigen 19-9 (CA19-9), and soluble interleukin-2 receptor (sIL-2R) were elevated at 8.5 ng/mL, 799 and 2954 U/mL, respectively.