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  • Title: Fine-needle aspiration of pancreatic extramedullary plasmacytoma: possible confusion with islet cell tumor.
    Author: Dodd LG, Evans DB, Symmans F, Katz RL.
    Journal: Diagn Cytopathol; 1994; 10(4):371-4; discussion 374-5. PubMed ID: 7924813.
    Abstract:
    We report two cases of extramedullary plasmacytoma (EMP) of the pancreas, diagnosed by fine-needle aspiration (FNA). Plasmacytoma of the pancreas is a rare neoplasm with only 12 cases recorded in the literature. Because of its scarcity and the cytomorphologic similarity between plasma cells and endocrine cells, EMP of the pancreas may be confused with neuroendocrine (islet cell) tumors of the pancreas. Immunohistochemical staining for light chain and/or neuroendocrine markers will prevent diagnostic error when interpreting plasmacytoid neoplasms of any site susceptible to endocrine tumors, including the pancreas.
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