Patient: Pulmonary arteriogram with imaging findings: the aortic arch and descending aorta are to the right of the mediastinum, and the aortic arch emanates sequentially from the left common carotid, right common carotid, right subclavian, left vertebral, and left subclavian arteries. Bilateral superior vena cava can be seen, with the left superior vena cava merging into the coronary sinus. The right superior vena cava drains into the right atrium. The left pulmonary artery wraps around the lower trachea, and approximately 60% stenosis is seen at the beginning of the left pulmonary artery. The Egyptian artery in the upper lobe of the right lung originates directly from the bifurcation of the trachea, and approximately 55% stenosis is seen at the beginning. Multiple 40-70% stenoses were seen in the middle and lower trachea, upper right lobe of the lung and right middle lung bronchus. Diagnosis: 1. Multiple mild-moderate stenoses are seen in the middle and lower trachea, upper right lobe of the lung and right middle lung bronchus, with a high probability of congenital developmental anomalies; 2. moderate stenosis at the beginning of the left pulmonary artery; 3. anomalous origin of the right upper lung artery with moderate stenosis; 4. bilateral superior collateral veins; 5. right aortic arch; 6. left vagal subclavian artery; 7. anomalous origin of the left vertebral artery. Confirm the cause of stenosis and is surgery possible? Doctor: Your child may have one of the congenital vascular rings: pulmonary artery sling. It is also combined with congenital abnormal development of the trachea, and therefore multiple tracheal stenoses are present. Usually a pulmonary artery sling is combined with a limited tracheal stenosis, and we can treat both the pulmonary artery and the limited tracheal lesion during surgery, but multiple tracheal stenoses are difficult to manage surgically. If the pulmonary artery sling is treated alone, the postoperative period can be life-threatening due to difficulty in evacuating the ventilator and other respiratory complications as a result of the tracheal stenosis.