Agenesis of the Left Pulmonary Artery Associated With Hypoplasia of the Homolateral Lung: An Unusual Cause of Recurrent Respiratory Infection.

Agenesis of the left pulmonary artery represents a rare malformation, accounting for a small fraction of all cases of congenital heart disease. It is characterized by the absence of the left pulmonary artery, which can lead to respiratory and cardiac complications. This anomaly can appear on a standard chest X-ray, but it must be confirmed by a chest CT scanner, which makes it possible to visualize the absence of the left pulmonary artery and the associated parenchymal anomalies. The involvement of these patients depends on the evolution of their clinical condition, which may require symptomatic treatment and surgical intervention. We present a case of agenesis of the left pulmonary artery in conjunction with hypoplasia of the corresponding lung, diagnosed in a 45-year-old patient following a recurrent respiratory infection.