Table 1. Congenital conditions associated with pulmonary artery aneurysms and pseudoaneurysms.

Etiology	Example
Heart defects	Persistent ductus arteriosus
	Ventricular septal defects
	Atrial septal defects
	Hypoplastic aortic valve
	Bicuspid aortic valve
	Pulmonary valve stenosis
	Pulmonary regurgitation
	Absent pulmonary valve
Connective tissue abnormality	Ehlers-Danlos syndrome
	Marfan syndrome
	Cystic medial necrosis