Atrial Septal Aneurysms

We have detected atrial septal aneurysms in 9 patients examined by two-dimensional echocardiography for various reasons. The lesion was an isolated finding in four cases while atrial septal defect, ventricular septal defect, mitral valve prolapse and tricuspid prolapse were associated findings in 6 cases. The whole septum was aneurysmatic in three of the cases while aneurysms were localized to fossa ovalis in six of them. In two instances right-left atrial movements were noted related to the cardiac cycle. ASA's have to be diferentiated from atrial tumors which may Iead to similar complications.