Circumflex-to-Bronchial Artery Fistulas in Behçet's Disease

Abstract

A coronary-to-bronchial artery fistula is a rare entity that emerged in the case of chronic pulmonary thromboembolism (cPTE). We present a case of a 50-year-old man with coronary-to-bronchial artery fistula in Behçet's disease that had been hospitalized in consequence of pulmonary thromboembolism attacks and treated with anticoagulation therapy repeatedly. After myocardial infarction was ruled out, coronary computerized tomography angiography was performed, and demonstrated right pulmonary artery occlusion, delay of the contrast passage in the right pulmonary veins, dilated right lung bronchial arteries, and fistulas between the right lung bronchial arteries and the left circumflex artery due to cPTE. Diagnosis of coronary-to bronchial artery fistula and early treatment are very important for the prevention of fatal complications. Radiologist and clinician should be alerted for this entity.