False aneurysm of the right ventricle due to endocarditis in a child.

An eight-year-old boy with supravalvular pulmonic stenosis, supravalvular aortic stenosis, and ventricular septal defect developed Staphylococcus aureus endocarditis. The infection was complicated by formation of a false aneurysm of the right ventricular outflow tract, which was demonstrated by contrast echocardiogram. Surgical treatment was successful. This is a unique case of false aneurysm of the outflow tract of the right ventricle, because it is secondary to endocarditis without known previous trauma to the right ventricular wall.