Transcatheter closure of a huge complex pulmonary arteriovenous malformation with four devices: a case report.

Pulmonary arteriovenous malformations are abnormal vascular connections between pulmonary arteries and veins, often causing right-to-left shunting. In this report, a 4-year-old boy with low oxygen saturation was diagnosed with a large, complex pulmonary arteriovenous malformation involving four feeding arteries. Percutaneous transcatheter closure was performed using four devices to occlude the major feeding arteries, resulting in increased arterial oxygen saturation from 72 to 98%. This report depicts the successful use of multiple devices for percutaneous closure of a complex pulmonary arteriovenous malformation in a child and highlights the minimally invasive and effective nature of this approach.