Pulmonary arteriovenous malformation (PAVM) is a rare anomalies of the lung that affects blood flow between the heart and the lungs.

Affected people have an abnormal connection between the pulmonary vein (carries blood from the lungs to the heart) and pulmonary artery (carries blood from the heart to the lungs).

Some people will have more than one PAVM; in more than half of patients with multiple PAVM this is associated with a condition called Hereditary Haemorrhagic Telangectasia.

Pulmonary arteriovenous malformations are usually congenital.

Most patients are asymptomatic.

The aims of treatment of PAVM are to block the PAVM and reduce the risk of stroke, heart failure and improve breathlessness.

Endovascular therapy is a minimally invasive outpatient based treatment wherein the feeding artery to the PAVM is occluded with coils or plugs or a combination of both.

This endovascular treatment associated with minimal morbidity and no mortality.