Carcinoid Tumor and Echocardiography

Carcinoid tumors are neuroendocrine tumors that have an estimated incidence of 1 to 8.4 cases per 100,000 people (2.5 to 5 cases per 100,000 population); these tumors release vasoactive compounds, including 5-hydroxytryptophan (serotonin) that fibroblast proliferative properties or transforming growth factor-b.