Fig. 12From: Congenital systemic venous return anomalies to the right atrium reviewa Circumcaval ureter schematic. An anomaly as the name implies, in which the ureter begins to course dorsal to the IVC, then arches the IVC to come to lie ventrally. b Circumcaval ureter embryology schematic. Resulting from the persistence of the right posterior cardinal vein positioned ventral to ureter in the definitive IVC. c Circumcaval ureter imaging. Contrast-enhanced CT presentation of a circumcaval ureter, which begins to course dorsal to the IVC, then arches the IVC by the left, coming to lie anteriorly, associated with mild proximal ureterohydronephrosisBack to article page