RT Journal Article SR Electronic T1 Aneurysm of the interatrial septum JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 105 OP 108 VO 53 IS 1 A1 John H. Wilson A1 Harry M. Lever A1 Douglas S. Moodie YR 1986 UL http://www.ccjm.org/content/53/1/105.abstract AB A case is reported of aneurysm of the interatrial septum that was initially diagnosed as a right atrial myxoma using angiography. Two-dimensional echocardiography revealed a redundant interatrial septum that showed striking phasic motion. The differential diagnosis and clinical implications are discussed in light of available previous reports of interatrial septal aneurysms.