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Functioning oxyphil parathyroid adenoma

R Sandler, L M Jourdain, I Damjanov

    Annals of Clinical and Laboratory Science
    |March 1, 1981
    PubMed
    Summary
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    Oxyphil adenomas can mimic thyroid nodules, presenting as neck masses for years before causing hyperparathyroidism. This slow progression is linked to the tumor cells' limited hormone production.

    Area of Science:

    • Endocrinology
    • Oncology
    • Pathology

    Background:

    • Parathyroid adenomas are common causes of primary hyperparathyroidism.
    • Oxyphil cell adenomas are a distinct subtype, often larger but with less clear clinical implications.
    • Differential diagnosis of neck masses includes thyroid nodules and parathyroid tumors.

    Observation:

    • A hormonally active oxyphil adenoma presented as a palpable neck mass for over six years.
    • The parathyroid adenoma initially mimicked a thyroid nodule.
    • Clinically obvious hyperparathyroidism developed only after a prolonged period.

    Findings:

    • The slow clinical evolution of hyperparathyroidism suggests a low hormonal synthetic capacity of the oxyphil cells.
    • The bulk of the tumor was composed of oxyphil cells.

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  • Despite its size and hormonal activity, the adenoma had a protracted course before overt disease manifestation.

    • Implications:

    • This case highlights the importance of considering parathyroid pathology in the differential diagnosis of persistent neck masses.
    • The findings suggest that the cellular composition of parathyroid adenomas can influence the rate of hormone overproduction and disease progression.
    • Long-term monitoring may be necessary for patients with large, indolent parathyroid adenomas.