A Case Report of Intraductal Papillary-Mucinous Neoplasm of the Pancreas Showing Morphologic Transformation during Followup Periods
Figure 2
(a) Resected specimens show marked dilation of the main pancreatic duct and papillary tumor (arrow) with cystic dilation of branch ducts (arrowhead). (b) Representative section and histologic distribution of the tumor. The boundary between the main pancreatic duct and a branch duct is visible (arrow). (c) Gastric-type adenoma is made up of columunar cells with basally-oriented nuclei, showing closely packed glands with anastomosing pattern (d) Intestinal-type carcinoma shows marked pseudostratification and nuclear atypia showing villous configuration (e) In a branch duct, intestinal-type carcinoma components with arborizing features are observed (f) A minimally invasive lesion is observed adjacent to branch ducts. Floating tumor cells in the mucous lake is visible (I, arrow).
