ANOMALOUS ORIGIN OF THE LEFT PULMONARY ARTERY FROM THE RIGHT PULMONARY ARTERY

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Abstract
Anomalous origin of the left pulmonary artery from the right pulmonary artery is a rare entity. Its effects are usually noted in infancy and are characterized by obstructive symptoms of the respiratory tract and recurrent pneumonia.The diagnosis of anomalous origin of the left pulmonary artery from the right pulmonary may be suspected upon roentgenologic evidence of obstructive emphysema and/or atelectasis of the right lung. Indentation of the anterior aspect of the barium-filled esophagus just above the carina (best seen in lateral view) is virtually diagnostic of this condition. The exact course pursued by the anomalous left pulmonary artery may be demonstrated in frontal views of selective pulmonary arteriograms. If the course of the left pulmonary artery is obscured by the pulmonary trunk in the frontal view, a selective pulmonary arteriogram in the left anterior oblique view, and with the esophagus filled with barium, may serve well to demonstrate the exact course pursued by the anomalous left pulmon...