A 35-year-old man with gynaecomastia as the first symptom of hyperthyroidism |
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| Authors: | Mullens A van den Bruel A Vanderschueren D |
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| Affiliation: | Katholieke Universiteit Leuven, Universitair Ziekenhuis Gasthuisberg, Kliniek en Laboratorium voor Experimentele Geneeskunde en Endocrinologie, Herestraat 49, 3000 Leuven, Belgi?. |
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| Abstract: | ![]()
A 35-year-old man suffered painful bilateral gynaecomastia for 2 months due to serious Graves' hyperthyroidism. During treatment with propylthiouracil and levothyroxine, the plasma concentrations of thyroid hormone, sex hormones and sex hormone-binding globulin normalised and the gynaecomastia disappeared. Gynaecomastia occurs in 30 to 40% of men diagnosed with Graves' hyperthyroidism. However, gynaecomastia as a presenting symptom of this autoimmune disease is uncommon. |
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