Accessory valvular tissue causing subpulmonary stenosis in corrected transposition of great vessels.
D003251:Constriction, Pathologic; D006330:Heart Defects, Congenital; D006801:Humans; D011666:Pulmonary Valve Stenosis; D014188:Transposition of Great Vessels
HEART DEFECTS, CONGENITAL; PULMONARY STENOSIS