[Arteriovenous fistula, involving both coronary arteries and main pulmonary trunk (author's transl)].

Anomalous communication between the coronary arterial tree and a cardiac chamber or great vessel was first described by Krause in 1865. To date more than 100 cases have been reported. The earlier papers consisted of descriptions of necropsies but in the past few years, the introduction of heart catheterization, intracardiac phonocardiography, and angiocardiographic techniques has enhanced the interest in these anomalies. Several cases have been diagnosed during life and corrected by operation. The purpose of this paper is to present a patient with an unusual form of coronary arteriovenous fistula: both coronary arteries gave rise to an anomalous branch opening into an aneurysmal mass which overlay the main pulmonary artery and communicated with it.