In the other two cases of the coronary arteriovenous fistulas, it is defined as a direct precapillary anastomosis between a majar coronary artery and the pulmonary trunk or the left ventricle.

• 2例冠状动静脉瘘，显示冠状动脉和肺动脉干与左室之间，存在毛细血管前吻合。