The persistent ostium primum atrial septal defect. (Partial persistent common atrioventricular canal).
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SOMERVILLE
D004694:Endocardial Cushion Defects; D006343:Heart Septal Defects; D006344:Heart Septal Defects, Atrial; D006345:Heart Septal Defects, Ventricular; D006346:Heart Septum / Q000002:abnormalities*; D006801:Humans
HEART SEPTUM/abnormalities