Aortic origin of the right pulmonary artery.

A seven-week-old infant with aortic origin of the right pulmonary artery and patent ductus arteriosus is reported. During preoperative studies, a balloon catheter was used to occlude the ductus arteriosus in order to define the status of the pulmonary vascular bed. Corrective operation was performed by anastomosis of the anomalous right pulmonary artery to the main pulmonary trunk and ligation of the ductus arteriosus. Preoperative assessment of the presence of pulmonary vascular obstructive disease is discussed.