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

Figure 7 Uniloculated serous cystic neoplasm. A: Axial single-shot T2-weighted image represents a reference example of the typical magnetic resonance appearance of serous cystic neoplasm; B: Axial single-shot T2-weighted image shows a cystic lesion in the pancreatic tail; C: Magnetic resonance cholangiopancreatography thick-slab demonstrates a predominantly unilocular morphology with subtle internal septations and no definite communication with the main pancreatic duct; D and E: Diffusion weighted imaging (b = 1000 second/mm²) shows mild hyperintensity on high b values due to T2 shine-through (arrow), without true diffusion restriction, as confirmed on apparent diffusion coefficient map, which demonstrates no signal drop, with hyperintense signal indicating absence of true restriction; F and G: Pre-contrast and post-contrast T1-weighted images depict a hypointense lesion with minimal peripheral enhancement. This appearance may mimic a mucinous cystic neoplasm.