The heart is closely connected with the endocrine system. On the one hand, the heart is an endocrine organ itself and produces several hormones like atrial and brain natriuretic peptides. On the other hand, cardiac structures are targets of many hormones like catecholamines, thyroid hormones, and corticosteroids. Therefore, many endocrine diseases come with cardiac symptoms. In this article, we describe three instructive clinical cases of patients with hormonal disorders that mimicked cardiovascular disease. Furthermore, we shortly discuss useful diagnostic and treatment algorithms. All cases emphasize the value of interdisciplinary management of patients with cardiac symptoms.
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