1.Aorta-right atrial tunnel is a rare entity characterized by a vascular fistula, which connects one of the sinuses of Valsalva in the ascending aorta and the right atrium.
主动脉-右心房隧道是一种罕见的以血管瘘为特征的实体，它连接升主动脉的主动脉窦和右心房。