Aorta-right atrial fistula: a rare complication of prosthetic aortic valvular endocarditis.

Aortic root abscess is a well-known complication of aortic valve endocarditis but intracardiac fistulas are rarely seen. This report describes a patient with prosthetic valve endocarditis who had an aortic root abscess that ruptured into the right atrium creating an aortic-right atrial fistula and causing a highly mobile vegetative mass in the right atrium.