CT
Coronal C+ arterial phase
Axial C+ arterial phase
Beautiful retrograde filling of azygos and hemiazygos veins via a right cubital fossa intravenous injection of radiographic contrast. Azygos vein rejoins the SVC in the chest and arises from the IVC posteriorly at the level of the right renal vein. The hemiazygos vein arises from a lumbar vein in the upper lumbar region and joins the azygos in the mid posterior mediastinum.