CEACAM5 and neoplasm: Tumor markers showed a high serum level of carcinoembryonic antigen (CEA) (19.0 ng/ml, normal range: <5.0), but serum levels of cancer antigen (CA) 125 (16.7 U/ml, normal range: <35.0) and CA19-9 (28.2 U/ml, normal range: <37.0) were within normal limits.