[Tracheo-bronchial malformation associated with an aberrant left pulmonary artery].

A new case of pulmonary artery sling in a three months old boy is reported. After the sudden death of the patient, a precise anatomic study of the malformation was realized. With a complete cartilaginous ring usual in this malformation, there is a right upper lobe bronchus arising from the trachea above the anomalous vessel. The other anomalies of the tracheobronchial tree are discussed.