KRAS and pancreatic intraductal papillary-mucinous neoplasm: At 8, 12, and 16 months of age, KRAS mice on standard isocaloric control or ω6-enriched diets had 100% penetrance of cystic papillary neoplasms (CPNs; resembling IPMNs or Intraductal Papillary Mucinous Neoplasms).