CEACAM5 and neoplasm: The serum tumor markers carcinoembryonic antigen (CEA): 8.6 ng/ml, carbohydrate antigen 19-9 (CA19-9): 261 U/ml, SPan-1: 100 U/ml, and DUPAN-2: 750 U/ml were elevated, but soluble interleukin-2 receptor concentration was normal (310 U/ml).