Carcinoid heart disease

Cardiac manifestation of malignant carcinoid syndrome. It is a unique form of fibrosis involving the endocardium, primarily of the right heart. The fibrous deposits tend to cause constriction of the tricuspid and pulmonary valves. Serotonin excretion plays a role in the development of carcinoid heart disease (CHD), but the exact pathogenesis is not known.

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