We present the apparently unique M-mode and two-dimensional echocardiographic features of a surgically confirmed pseudoaneurysm of the left ventricular outflow tract, which probably developed as a result of perforation of the mitral-aortic intervalvular fibrosa. Echocardiographic studies revealed an aneurysmal sac situated between the aortic root and the left atrium. The aneurysm expanded in sy...

Received September 8, 2008, from the Department of Ultrasound, Beijing Anzhen Hospital, Capital Medical University, Beijing, China (J.H., Y.H., Z.L., J.C., X.G., J.P., J.X.); and Pauley Heart Center, VCU Health System, Virginia Commonwealth University, Richmond, Virginia USA (J.V.N., M.C.K.). Revision requested September 25, 2008. Revised manuscript accepted for publication October 28, 2008. Ad...

Four patients are described who developed unusual complications of bacterial endocarditis, in addition to aortic regurgitation: one patient with ventricular septal defect and three patients with mycotic aneurysm of the mitral-aortic intervalvular fibrosa. The definitive diagnosis of these unusual manifestations of bacterial endocarditis can only be established by cardiac catheterization and wit...