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A 5-month-old infant presented with persistent tachyarrhythmia, cardiomegaly, and an abdominal mass. Cardiac catheterization and cineangiocardiograms revealed multiple aneurysms of the atria. These were removed successfully at surgery, whereupon normal sinus rhythm returned. The abdominal mass proved to be a hamartoma of the liver.
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Varghese et al. (1969) studied this question.
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