CEACAM5 and neoplasm: Of the 143 patients, 48 were older than 60 years old, making up 33.5% of the total; 59 patients were female, making up 41.2% of the total; the majority of tumor primary sites were in the pancreatic head; liver metastases accounted for the majority of tumor metastases, making up approximately 70% of the total number of patients; only 81 patients had elevated CEA, and 127 patients had elevated CA19‐9.