CEACAM5 and pancreatic intraductal papillary-mucinous neoplasm: A meta-analysis investigating the ability of serum CA19-9 and CEA to identify invasive and malignant IPMN has found that CA19-9 has a sensitivity of 52% and 40% and a specificity of 88% and 89%, whereas CEA has a sensitivity of 18% and a specificity of 95% and 93% for invasive and malignant IPMN23.