PMC4881869_01
Venogram obtained during the first attempt in an electrophysiological study. The contrast agent passes into the dilated azygos vein (distal arrows) and PLSVC (proximal arrow).
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Iodinated contrast material was injected in order to obtain a venogram (Fig. 1).
MR angiography shows a dilated azygos vein (A; arrows). The hepatic veins drained directly into the right atrium (B).
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Magnetic resonance (MR) angiography of the thorax and abdomen was performed for further evaluation of congenital cardiac and vascular defects (Fig. 2).
The EP catheters went advance through the azygos vein (distal) and superior vena cava (proximal) to complete the electrophysiological study.
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