Aorta-right atrial tunnel in an adult.

Aorta-right atrial tunnel was diagnosed in a non-symptomatic 31-year old female patient. The Q p /Q s ratio was 2.5. Computed tomography and intraoperative views showed a posterior vascular tunnel with left aortic sinus and right atrium openings (Figs 1 and 2). The tunnel had no myocardial branches. We successfully closed both the openings. Figure 1: (A) A reconstructed computed tomographic view of the aorta-right atrial tunnel, which passed along the posterior aspect of the aorta (arrows indicate the tunnel). (B) The aortic origin of the aorta-right atrial tunnel (arrow indicates the origin of the tunnel where a surgical aspirator is situated). (C) The right atrial opening of the tunnel (arrow indicates the opening of the tunnel).