[A rare cause of continuous thoracic murmur. A fistula between the internal mammary artery and the pulmonary circulation]. / Une cause rare de souffle continu du thorax. Fistule entre l'artère mammaire interne et la circulation pulmonaire.

The authors present a case of a continuous right lateral sternal murmur which led to the discovery of a systemic-to-pulmonary fistula at the origin of the internal mammary artery. The fact that the patient had a right pulmonary abscess with pyopneumothorax drained several years previously has led them to discuss the possible etiology of this fistula. The murmur disappeared after surgical treatment.