pulmonary aneurysm causes
Pulmonary artery aneurysms and pseudoaneurysms are uncommon. Most are caused by trauma, often iatrogenic, infection, and BehÃ§et's syndrome. Less common causes include pulmonary hypertension, congenital heart disease, neoplasms, and connective tissue disease.
Congenital causes of pulmonary artery aneurysms and pseudoaneurysms include deficiency of the vessel wall, valvular and postvalvular stenosis, and increased flow due to left to right shunts. Increased hemodynamic shear stresses (Fig.