Intraductal papillary mucinous neoplasm (IPMN) is an exocrine tumor of the pancreas composed of mucin-producing epithelial cells and is a common disease, accounting for 1% of all pancreatic tumors and 25% of all pancreatic cystic tumors [1]. This evidence concerns the gene MUC5AC and pancreatic intraductal papillary-mucinous neoplasm.