Figure 3: Axial nonelectrocardiographic gated contrast-enhanced computed tomography scan of the chest obtained at the level of aortic root in arterial phase showing: a tubular connection (green outline) of maximum diameter 17.5 mm and approximate length 9.7 cm noted between aorta (red arrow) and right atrium (blue arrow) arising from right sinotubular junction extending anteriorly and then curving posterosuperiorly to open into right atrium near the opening of right superior vena cava