Figure 25b

Carcinoid heart disease. Insert shows pulmonary stenosis. The leaflets of the tricuspid valve are thickened. The valve is predominantly incompetent and causes pulmonary regurgitation. Fibrous plaques are deposited on the lining of the right ventricle and pulmonary trunk.

Reference:JE Edwards:Effects of malignant noncardiac tumors upon the cardiovascular system. Cardiovasc Clin 4:282,1971.