Common cystic pancreatic neoplasms: A comprehensive magnetic resonance imaging-based review of typical and atypical imaging features

Figure 5 Mixed-type intraductal papillary mucinous neoplasm associated with intrapancreatic lipoma. A and B: Axial single-shot T2-weighted images show a well-defined intrapancreatic lipoma (arrow) exerting mass effect on the adjacent duodenum and on multiple cystic dilatations; C: Post-contrast T1-weighted image demonstrates compressed cystic lesions in the pancreatic head and uncinate process, raising differential diagnostic considerations between branch-duct intraductal papillary mucinous neoplasm and microcystic serous cystadenoma; D: Magnetic resonance cholangiopancreatography maximum intensity projection reconstruction confirms direct communication between the cystic dilatations and the main pancreatic duct, supporting the diagnosis of mixed-type intraductal papillary mucinous neoplasm (histologically confirmed).