Pulmonary artery aneurysm in a child secondary to infective endarteritis.

A 5-year-old boy with main pulmonary artery aneurysm is described with two predisposing factors of patent ductus arteriosus and associated infective endarteritis. Transthorasic echocardiography showed definitely a saccular aneurysm originating from the main pulmonary artery at the site of a previous vegetation. Antibiotic therapy and surgical resection of the aneurysm allowed for clinical improvement.