To the Editor.—The article by Clarkson et al entitled "Aberrant Left Pulmonary Artery" (Amer J Dis Child 113:373-377, 1967) makes reference to our reported case "Anomalous Left Pulmonary Artery Causing Obstruction To Right Main Bronchus", by Potts et al (JAMA 155:1409-1411, 1954). This infant was recognized a few hours after birth as having had an obstructive emphysema involving the right lung. It was concluded preoperatively that this infant suffered from external pressure on the right bronchus and the lower trachea. It was concluded that this condition must be due to an aberrant blood vessel.
At surgery, a complete anatomic correction was made by Dr. Potts. The left pulmonary artery was clamped at its origin from the main pulmonary artery. This child made a completely uneventful recovery and remained perfectly well following the surgery. For the first few months after the surgery, there were occasional attacks of a very mild