Pseudoaneurysm of the Mitral-Aortic Intervalvular Fibrosa: A Long-Term Complication of Infective Endocarditis.

Pseudoaneurysms of the left ventricle are rare and may occur as a result of transmural myocardial infarction, chest trauma, cardiac surgery, or endocarditis. Although postinfarction pseudoaneurysms commonly arise in the mid and apical segments of the left ventricle, those resulting from endocarditis arise at the base of the heart. Here we report the case of a patient who developed a large pseudoaneurysm as a complication of aortic valve endocarditis. The pseudoaneurysm had two uncommon features; it originated from the intervalvular fibrous body connecting the mitral to the aortic valve, and it eroded through the chest wall, resulting in blood drainage through the skin.