Introduction:

Heart failure is a frequent disease that is not only caused by myocardial ischemia, hypertension or valve disease, but also by many other diseases. However, its etiology is rarely addressed, and therefore its management is usually symptomatic, which may affect the course of the disease, taking into account that an early etiological diagnosis could lead to better outcomes. The main clinical signs of the typical carcinoid tumor are diarrhea, facial flushing and bronchospasm, although heart failure symptoms have also been described in patients with this condition (less than 20%).

Case presentation:

A 77-year-old man visited the emergency department due to decompensated heart failure. Considering his poor response to the proposed treatment and symptoms such as chronic diarrhea, several diagnostic studies were performed, which allowed diagnosing him with a neuroendocrine tumor.

Conclusions:

Heart failure is a frequent pathology in the general population. However, the early detection of rare causes, such as carcinoid syndrome, will allow implementing adequate studies, staging and treatment in order to prevent complications such as carcinoid heart disease, which will have a positive impact on the patient's quality of life and prognosis.

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