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Fig. 4 | Insights into Imaging

Fig. 4

From: Congenital systemic venous return anomalies to the right atrium review

Fig. 4

a Interrupted SVC schematic. In an absence of the SVC, the venous blood from the upper body drains into the persistent azygo-hemiazygos system of veins subdiaphragmatically, with prominent collateral vessels that allow a sufficient venous return by cavo-caval anastomoses. b Interrupted SVC imaging contrast-enhanced CT showing an interruption of the SVC [A, B] with exuberant collateral circulation by the azygos-hemiazygos venous system [C, D] and collaterals of the anterior chest wall (asterisk)

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