Fig. 3

a Macroscopic view of the cut surface of resected pancreas body showing the tumor lesions marked in red circles. b Loupe imaging of the pancreatic body demonstrated the tumor replacing acinar lobules and occupying the MPD. c, d The tumor cells showed basally aligned nuclei and eosinophilic cytoplasm and formed an acinar structure c and a solid structure d. e A tumor of the pancreatic tail displayed a well-demarcated solid mass, included in a component of neuroendocrine tumor. f Gross image of additionally resected pancreas head also showed multiple neoplastic lesions, circled in red