Abstract
Pulmonary arteriovenous malformation is characterized by an anatomic right-to-left shunt between the pulmonary arteries and veins, is characterized by an anatomic right-to-left shunt which reduces the arterial oxygen saturation and then results in clinical manifestations such as dyspnea and cyanosis. Most cases are congenital, and although uncommon, they are a significant part of the differential diagnosis of pulmonary problems like hypoxemia and lung nodules. We present a case of a 60 years old female patient who presented with the complaint of exacerbation of dry cough of 1-month duration and was diagnosed with right pulmonary arteriovenous malformation and successfully treated with surgery.