Given the intraoperative suspicion of neoplasia, serum markers were measured after surgery, yielding values for cancer antigen 19-9 (CA 19-9), cancer antigen 125 (CA 125), and carcinoembryonic antigen (CEA) of 70.1 U/mL, 30.9 U/mL, and 1.3 ng/mL, respectively. Here, CEACAM5 is linked to neoplasm.