Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists
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To present two new cases of gynecomastia as the initial manifestation of hyperthyroidism. ⋯ Because of the rarity of gynecomastia as the initial symptom of hyperthyroidism, we believe that thyroid function tests are not indicated in the workup of patients whose major complaint is gynecomastia.