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  • Title: Parathyroid adenoma diagnosed as papillary carcinoma of thyroid on needle aspiration smears.
    Author: Friedman M, Shimaoka K, Lopez CA, Shedd DP.
    Journal: Acta Cytol; 1983; 27(3):337-40. PubMed ID: 6575552.
    Abstract:
    Needle aspiration of a neck mass was performed on a 55-year-old white female with hypercalcemia. The cytologic material showed cohesive clusters of monomorphic hyperchromatic cells resembling follicular cells. Papillary formation and follicle-like arrangements suggested papillary carcinoma of the thyroid. The histopathologic section of the excised mass, however, revealed a parathyroid adenoma. The diagnostic difficulties in differentiating parathyroid adenoma from well-differentiated thyroid carcinoma are discussed. Data published in the literature emphasize similar difficulties, and it is concluded that a final diagnosis can be established only on histopathologic sections.
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