Secretin, a hormone produced by duodenal mucosal cells increases blood-flow to the pancreas. The investigators' hypothesis is that as secretin increases blood flow to the pancreas, there will be increased conspicuity in areas of dysplasia/cancer where there is minimal blood-flow, enhancing tumor detection. The investigators are conducting a prospective, randomized-control pilot study of thirty subjects with IPMN or pancreatic cancer who are undergoing surgical resection at Columbia University's Pancreas Center. Fifteen subjects will be randomly selected to undergo S-MRI prior to surgery and fifteen subjects will be selected as controls, undergoing MRI without secretin-enhancement and matched for age, sex, race and tumor-type. The investigators will first evaluate if secretin allows for increased tumor conspicuity, enhanced visualization of the lesion, by comparing the calculated tumor conspicuity of S-MRI to N-MRI groups.