Abstract
A 42-year-old woman with a medullary thyroid carcinoma (MTC) inside of an autonomously functioning thyroid nodule is reported. The patient was initially diagnosed of a hyperfunctioning autonomous thyroid adenoma but the histopathological and immunohistochemistry study were diagnostic for a MTC. This is the first case of a medullary thyroid carcinoma associated with thyroid hyper-function which was presented as a hot nodule in the scintigraphy. We propose a systematic performance of a fine needle biopsy in all thyroid nodules because of the possibility of carcinoma associated to functioning nodules could be present.
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Rivas, I., Gutiérrez, C., Vendrell, J. et al. Medullary thyroid carcinoma mimicking an autonomous functioning nodule. J Endocrinol Invest 18, 224–227 (1995). https://doi.org/10.1007/BF03347806
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DOI: https://doi.org/10.1007/BF03347806