Low Pressure Pulmonary Artery Aneurysm with Atrial Septal Defect
A 69-year-old male was referred to our department for evaluation of a lung mass which is incidentally found on a routine chest X-ray. He was asymptomatic and physical examination did not reveal cardiac murmurs. There were no finding to doubt infection, vasculitis, collagen vascular disease, and trauma in the physical examination. Specific finding was not found in the laboratory finding. Chest X-ray showed left hilar enlargement (). Chest computed tomography showed aneurysmal dilatation of main PA (). The maximum diameter of the aneurysm was 56 mm. Transthoracic echocardiography showed PA aneurysmal formation with mild pulmonary regurgitation () and small atrial septal defect (). The pulmonary to systemic flow ratio (Qp : Qs ratio) was 1.2. The pulmonary transvalvular peak pressure gradient was 8 mmHg. The right heart chambers appeared mildly dilated with pulmonary systolic artery pressure of 26 mmHg. He has been considered surgery for the PA aneurysm but refused it. And he was stable at 6 months follow-up.