PLAIN RADIOGRAPHIC DIAGNOSIS OF CONGENITAL HEART DISEASE
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A. There is cardiomegaly with increased pulmonary arterial markings. There is dilation of both the left and right innominate veins and the right superior vena cava producing the classical "snowman" or "figure of 8" appearance. The superior mediastinum is enlarged secondary to dilation of the right vena cava, innominate vein and ascending vertical vein.