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Bronchial arteries originate from the descending aorta at the level of the T5-T6 vertebrae following an intrapulmonary course along the major bronchi. When bronchial arteries take off from a vessel other than the descending aorta, the anatomy is defined as an anomalous origin of the bronchial artery.    Case presentation  A 3-day-old boy from Kosovo with dextro-transposition of the great arteries who developed progressive heart failure required an emergency arterial switch operation. Because of persistent pulmonary edema after completion of the arterial switch operation at our institution, the patient could not be weaned off mechanical ventilation. Transthoracic echocardiography revealed an anomalous accelerated flow, indicating an anomalous systemic pulmonary shunt. Arterial catheterization revealed an abnormal bronchial artery originating from the left subclavian artery and bifurcating to both lungs. The anomalous ectatic bronchial artery was successfully occluded by coil embolization. The improvement of the patient’s hemodynamic status resulted in an uneventful post-operative course.    Conclusion  A coil embolization procedure was successfully performed to treat an anomalous bronchial artery originating from the left subclavian artery after a switch operation in a patient with transposition of the great arteries. When clinically indicated, catheter-based therapy with coil embolization can be performed to successfully treat anomalous bronchial arteries by reducing as such the pulmonary overflow.

Coil embolization of an anomalous bronchial artery originating from the left subclavian artery following arterial switch operation: a case report