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Ann Thorac Surg 2001;71:1672-1673
© 2001 The Society of Thoracic Surgeons

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Case report

Three-year follow-up of an atrial septal aneurysm

^a Department of Internal Medicine, National Defense Medical College, Saitama, Japan
^b Department of Surgery, National Defense Medical College, Saitama, Japan

Accepted for publication June 6, 2000.

Address reprint requests to Dr Shinohara, Internal Medicine, National Defense Medical College, 3–2 Namiki, Tokorozawa, Saitama, 359–8513, Japan
e-mail: srg1512{at}gr.ndmc.ac.jp

This is a 3-year follow-up of a gradually ballooning atrial septal aneurysm (ASA) which developed a spontaneous echo contrast and later a mobile thrombus in the aneurysm. This clearly demonstrates one of the pathogenetic mechanisms of systemic thromboembolism associated with ASA. In view of the risk of systemic thromboembolism or the need for lifelong anticoagulation treatment, the aneurysm was excised and an atrial septal patch was fashioned to close the resultant defect.