CEACAM5 and pancreatic intraductal papillary-mucinous neoplasm: AMY: serum amylase levels; LIP: serum lipase levels; CA19-9: serum carbohydrate antigen 19-9 levels; CEA: serum carcinoembryonic antigen levels; Ph: pancreatic head; Pb: pancreatic body; Pt: pancreatic tail; MPD: main pancreatic duct; FPPA: focal pancreatic parenchymal atrophy; UPA: upper pancreatic atrophy; MN: mural nodule; PD: pancreaticoduodenectomy; DP: distal pancreatectomy; TP: total pancreatectomy; IPMN: intraductal papillary mucinous neoplasm of the pancreas; IC: IPMN with an associated invasive carcinoma; HG-IPMN: high-grade IPMN; LG-IPMN: low-grade IPMN.