Unusual form of coronary artery fistula of left anterior descending and right coronary artery in an adult patient.

An unusual morphologically tortuous, common fistulous communication of the left anterior descending and right coronary artery with the right ventricle was found in a 55-year-old male patient with severe aortic and mild mitral regurgitation. The angiographic features of this lesion are discussed because of the rarity of this doubly rare coronary artery fistula.