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Related Experiment Videos

Suppressive therapy for postirradiation thyroid nodules.

E P Getaz, K Shimaoka, M Razack

    Canadian Journal of Surgery. Journal Canadien De Chirurgie
    |November 1, 1980
    PubMed
    Summary
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    Thyroid nodules in patients with prior head and neck irradiation responded well to suppressive therapy. Complete disappearance in 24 patients suggests this approach can help avoid surgery for some.

    Area of Science:

    • Endocrinology
    • Oncology
    • Nuclear Medicine

    Background:

    • Previous irradiation to the head and neck is a known risk factor for developing thyroid nodules.
    • Thyroid nodules, particularly in irradiated patients, require careful evaluation due to potential malignancy.

    Purpose of the Study:

    • To evaluate the efficacy of thyroid replacement therapy in patients with thyroid nodules following previous head and neck irradiation.
    • To determine predictors for complete resolution of thyroid nodules and identify patients who may avoid surgery.

    Main Methods:

    • Retrospective analysis of 85 patients with thyroid nodules and a history of head and neck irradiation.
    • Diagnosis confirmed by needle aspiration cytology.
    • Treatment with thyroid replacement therapy, with outcomes assessed by nodule size reduction.

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    Main Results:

    • Complete disappearance of nodules in 24 patients (28%).
    • Partial response (>50% reduction) in 26 patients (31%), improvement (20-50% reduction) in 11 (13%), stable disease in 14 (16%), and progression in 10 (12%).
    • Six of 21 operated patients had well-differentiated tumors; 14 cases of Hashimoto's thyroiditis were noted.

    Conclusions:

    • Thyroid replacement therapy can lead to complete resolution of nodules in a significant portion of irradiated patients, potentially sparing them from surgery.
    • Continued follow-up is crucial for all patients. Surgery should be considered for patients not responding to suppressive therapy, given the 30% malignancy rate in nodules.