“…These findings indicate that MUC5AC may not always detect IPMN. Other antibodies, such as the pancytokeratin antibody (AE1/AE3), CAM5.2, and cytokeratins 8,18,and 19), are also expressed in all IPMNs. However, these proteins are epithelial markers that are also found in normal ducts of the pancreas [14].…”