Hot and malignant – a case of invasive papillary carcinoma in hyperthyroid patient with hot nodules

ABSTRACT

Introduction: Malignant thyroid nodules are clinically euthyroid and appear as cold nodules on scintigraphy. Malignancy in hyper-functioning thyroid nodule is rare.

Case report: A 48-year-old male with painless swelling on the right side of his neck for the last 4 months complained of feeling hot all the time, sweating and unintentionally losing about 20 pounds. On physical examination, there was a 3-cm mobile, non-tender mass on the right supra-clavicular area biopsy of which was consistent with metastatic papillary carcinoma of thyroid. Neck imaging showed a cystic mass in the right supra-clavicular fossa region, bilateral neck adenopathy and multiple thyroid nodules. Subsequent thyroid radionuclide scans showed three hyper-functioning nodules, which were later demonstrated to be a follicular variant of papillary microcarcinoma. He was treated with total thyroidectomy followed by radioactive iodine thyroid ablation therapy.

Conclusion: Physicians need to be aware and vigilant for the possibilities of malignancy in a hyper-functioning thyroid nodule when evaluating any thyroid nodule.

KEYWORDS:

• Metastasis
• papillary thyroid carcinoma
• hot nodule
• carcinoma of thyroid
• hyperthyroidism

Disclosure statement

No potential conflict of interest was reported by the authors.