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Fig. 10 | Insights into Imaging

Fig. 10

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

Fig. 10

a Circumaortic left renal vein schematic. In the case of the existence of two left renal veins, one superior, that crosses ventral to the aorta, and one inferior, that crosses dorsal to the aorta. b Circumaortic left renal vein embryology schematic. Showing the persistence of both venous arches of the left renal vein, one superior and ventral to the aorta, composed by the inter-subcardinal anastomosis and ventral limbs of the left sub-supracardinal anastomosis and left renal vein, and one inferior and dorsal to the aorta, composed by the inter-supracardinal anastomosis, and dorsal limbs of the left sub-supra cardinal anastomosis and left renal vein. c Circumaortic left renal vein imaging. Contrast-enhanced CT presentation of a circumaortic left renal vein with an anterior left renal vein (A) and a retro-aortic left renal vein (R)

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