SummaryWe describe the unusual association of a divided left atrium (cor triatriatum) with an atrioventricular septal defect with separate atrioventricular orifices in an eight-year-old asymptomatic girl. The diagnosis had been made by cross-sectional echocardiography combined with Doppler technology and color-flow mapping. These methods together demonstrate both the anatomic and hemodynamic findings.
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