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Plain chest radiographs showed a bulged contour (arrow) at the right upper cardiac border of a 4.5-month-old male (A), and deviations (arrow) of the trachea in a 16-day-old male (B). Barium esophagograms taken from a 4.5-month-old male showed an indentation (arrow) at the upper third portion of the esophagus, which is located on the left aspect of the frontal projection (C), and the posterior aspect of the lateral projection (D), respectively.
