Aberrant left pulmonary artery: a rare cause of congenital stridor.

Aberrant left pulmonary artery is a rare cause of stridor and respiratory difficulty in infancy and childhood. Diagnosis can be made on oesophagram, and is confirmed conclusively on angiography. Surgery can be curative, especially in cases without severe associated cardiovascular anomalies. A case report is presented of the condition occurring in a South African Black infant.