Discrete Subaortic Stenosis Due to an Accessory Aortic Valve

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  • Joo Kunihiko
    Department of Pediatric Cardiac Surgery, Kumamoto City Hospital
  • Fukae Koji
    Department of Pediatric Cardiac Surgery, Kumamoto City Hospital
  • Matsuo Osamu
    Department of Pediatrics, Kumamoto University Hospital

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<p>Discrete subaortic stenosis (DSS) is considered an acquired lesion caused by a progressively enlarging shelf of fibrous or fibromuscular tissue beneath the aortic valve. We present a case of DSS caused by a flap of tissue attached to the aortic valve cusp. A pathological analysis of the resected flap suggested that it was valvular tissue, thus supporting the diagnosis of DSS secondary to congenital accessory aortic valve disease.</p>

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