Intraductal Papillary Mucinous Neoplasm of the Pancreas Definition. * Grossly and/or radiographically visible pancreatic ... consensus on the classification of pancreatic intraepithelial neoplasia and intraductal papillary mucinous neoplasms. Am J Surg ... Precursors to invasive pancreatic cancer. Adv Anat Pathol. 2005 Mar;12(2):81-91. ... Considered by some to be a separate lesion, see details at Intraductall Oncocytic Papillary Neoplasm ...