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Magnetic resonance imaging (MRI) revealed a low signal intensity irregular mass (8\u00d77 mm) and a comma-shaped mass (12 mm) in the right atrium. She was prophylactically anticoagulated for the probable emboli. Repeat cardiac MRI performed 2 weeks later showed that the size of the masses remained unchanged. Surgical intervention was not suggested by the cardiothoracic surgeons. 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