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Algorithm for diagnosing pancreatic neoplasms grossly and microscopically.
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Beta catenin, vimentin, CD10, CD56
Stroma resembles ovary, ER PR +
• Gastric type-arise from branch duct, columnar cells with basally situated innocuous nuclei, usually not high grade dysplasia
• Intestinal type-arise from main duct, can have high grade dysplasia
• Pancreaticobiliary type-can have high grade dysplasia
• Oncocytic type-majority have high grade dysplasia, mplex architecture w occasional cribriform or solid foci