Carcinoid syndrome. Definition

Medical Definition: carcinoid syndrome

Derived from clinical hypersecretion by a carcinoid tumor, serotonin, prostaglandins and other vasoactive substances, characterized by episodes of flushing, watery diarrhea, bronchoconstriction and hypotension. May cause endocardial fibrosis of the tricuspid and pulmonary valves. Typically, the tumor is located in the digestive tract, the liver being a frequent seat of metastases.

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