PMC8602870_01
Suprasternal notch view of transthoracic echocardiography with color Doppler. (A) The pulmonary venous confluence (CPV) posterior to the left atrium. (B) The vertical vein (VV) originating from the CPV. (C) The anomalous vessel (asterisk) flowing from left to right behind the ascending aorta. (D) The left innominate vein in its normal position is not so dilated. Ao indicates aorta; PA, pulmonary artery; SVC, superior vena cava; LIV, left innominate vein.
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F1
The suprasternal notch view showed pulmonary venous confluence (CPV) posterior to the left atrium (LA) and a vertical vein (VV) that originated from the CPV (Figures 1A,B). Additionally, an anomalous vessel flowing from left to right behind the aorta was observed, and the left innominate vein (LIV), which was positioned normally, was not so dilated (Figures 1C,D).
Three-dimensional cardiac computed tomography reveals that the retroaortic innominate vein (RAIV, double arrow) passes posterior to the ascending aorta to join the superior vena cava and the vertical vein (single arrow) merges into the RAIV.
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F2
A three-dimensional cardiac computed tomography confirmed the RAIV had dilated, and the VV that merged with the RAIV (Figure 2).