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Examples of sclerosing and non-sclerosing pancreatic neuroendocrine tumors. A-B: A sclerosing pancreatic neuroendocrine tumor surrounding a pancreatic duct (A, original magnification 40×; B, 200×); B: A non-sclerosing, hypercellular pancreatic neuroendocrine tumor (C, original magnification 40×; D, 200×).
