CEACAM5 and neoplasm: The levels of tumor markers were as follows: carcinoembryonic antigen (CEA), 3.0 ng/ml; carbohydrate antigen 19-9 (CA19-9), 20 U/ml; Span-1, 39 U/ml (< 30); NCC-ST-439, 1.2 U/ml (< 4.5); AFP, 2 ng/ml.