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Ann Thorac Surg 2005;80:2364-2365
© 2005 The Society of Thoracic Surgeons

Case report

Saccular Aneurysm of the Aortic Cusp Associated With Discrete Subaortic Stenosis

Seiji Matsukuma, MD * , Kiyoyuki Eishi, MD, Shiro Yamachika, MD, Tomayoshi Hayashi, MD, PhD, Shiro Hazama, MD, Hiroichiro Yamaguchi, MD, Tsuneo Ariyoshi, MD, Hideaki Takai, MD, Tomohiro Odate, MD, Daisuke Onohara, MD, Makoto Yanatori, MD

Department of Cardiovascular Surgery, Nagasaki University School of Medicine, Nagasaki, Japan

Accepted for publication July 14, 2004.

* Address correspondence to Dr Matsukuma, Nagasaki University School of Medicine, Department of Cardiovascular Surgery, 1-7-1 Sakamoto, Nagasaki City, Nagasaki 852-8501, Japan; (Email: seiji731{at}net.nagasaki-u.ac.jp).

A 54-year-old male who experienced a syncopal episode underwent aortic valve replacement for aortic stenosis and regurgitation. The aortic valve was incompetent as a result of thickening of the left coronary cusp and noncoronary cusp. In addition a saccular aneurysm was indicated on the left coronary cusp. A shelf of tissue protruding at right angles from the ventricular septum was particularly prominent below the right coronary cusp, resulting in subvalvular stenosis. The cause of the saccular aneurysm was most likely caused by the long-term effects of the jet stream instigated by discrete subaortic stenosis.






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