Mixed Main- and Branch-Duct Intraductal Papillary Mucinous Neoplasm (#IPMN) with Low-Grade Dysplasia. This one harbors a mutation despite the presence of gastric foveolar-type epithelium.

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Main-Duct Intraductal Papillary Mucinous Neoplasm (IPMN) with high-grade dysplasia (HGD). I find it's easier to see when submerged in formalin. Note, the engorged vessels and extension to the resection margin.

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