- Papillary Thyroid Carcinoma Manifesting as an Autonomously Functioning Thyroid Nodule.
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Ji Hyun Kim, Gyeong Jae Na, Ki Won Kim, Hee Ja Ko, Sung Wan Jeon, Yeo Joo Kim, Sang Jin Kim, Hyeun Duk Jo, Chang Jin Kim
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Endocrinol Metab. 2012;27(1):59-62. Published online March 1, 2012
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DOI: https://doi.org/10.3803/EnM.2012.27.1.59
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- Hyperfunctioning thyroid carcinoma is very rare. Hence, radionuclide imaging of thyroid hot nodules usually suggests a benign tumor, and less than 4% of cases have been reported as malignant. We would like to present a case of a hyperfunctioning papillary thyroid carcinoma that was initially treated with radioactive iodine. A 58-year-old woman was referred to our hospital for palpable thyroid nodule and a 5-kg weight loss within 6 months. Thyroid function test revealed thyrotoxicosis, and thyroid autoantibodies were absent. 99mTc thyroid scintigraphy showed a 2 x 2 cm-sized hyperactive hot nodule at the left lobe. Despite radioactive iodine treatment with a dose of 10 mCi 131I, thyroid function did not improve. Fine needle aspiration revealed papillary thyroid cancer. The patient underwent total thyroidectomy. Although clinical features and thyroid scans suggest a benign nodule, the possibility of malignancy should not be ruled out. Malignant thyroid hot nodules are rare; however, its possibility should be taken into account. Therefore, we suggest that ruling out malignancy by existing diagnostic guidelines can misdiagnose even a typical case with benign features. As thyroid nodule detection is getting sensitive and accurate, we present this case to discuss whether additional diagnostic approaches would be necessary for thyroid nodules.
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Citations
Citations to this article as recorded by  - Ultrasonographic Characteristics of the Hyperfunctioning Thyroid Nodule and Predictive Factors for Thyroid Stimulating Hormone Suppression
Won Sang Yoo, Hoon Sung Choi
International Journal of Thyroidology.2019; 12(1): 35. CrossRef - Papillary Thyroid Carcinoma Presented as a Hot Nodule with Hyperthyroidism
Sung Hye Kong, Seo Young Lee, Ye Seul Yang, Jae Hoon Moon
International Journal of Thyroidology.2016; 9(1): 47. CrossRef - Follicular variant of papillary thyroid carcinoma: an unusual cause of thyrotoxicosis
David Owen Rees, Victoria Angharad Anthony, Keston Jones, Jeffrey W Stephens
BMJ Case Reports.2015; : bcr2014207091. CrossRef
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