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Tumors of the pancreas and ampulla
Tumors of the pancreatic duct or ductal-related origin Pancreatic intraepithelial neoplasia Pancreatic intraepithelial neoplasia (PanIN) is a noninvasive lesion confined to the pancreatic ducts and observed only microscopically (<0.5 cm). The mucin-containing duct epithelium exhibits a spectrum of architectural and…