n: number; IQR: interquartile range; IPMN: intraductal papillary mucinous neoplasm; MCN: mucinous cystic neoplasm; SCN: serous cystadenoma; pNET: pancreatic neuroendocrine tumor; SPN: solid papillary neoplasm; CEA: carcinoembryonic antigen. Here, CEACAM5 is linked to serous cystadenoma.