Frontiers in Oncology
Case Report: Metachronous oncocytic and colloid carcinoma arising from pancreatic intraductal neoplasms over four decades
Intraductal papillary mucinous neoplasms (IPMN) are precursors of pancreatic ductal adenocarcinoma (PDAC) and may progress to distinct invasive phenotypes depending on epithelial subtypes. Tubular carcinoma, often arising from pancreatobiliary epithelium, is clinically aggressive and resembles PDAC, whereas colloid carcinoma, typically derived from intestinal epithelium, has a more indolent course. Intraductal oncocytic papillary neoplasms (IOPN), historically considered a subtype of IPMN, are now recognized as a d …