Fig. 23From: The inferior vena cava: anatomical variants and acquired pathologiesIVC pseudothrombus due to mixing artefact. a,c Arterial phase CT demonstrates an apparent filling defect in the IVC attributable to contrast-enhanced blood (arrows) draining from both renal veins and running alongside a column of non-enhanced blood from the lower extremities. b,d Coronal and axial CT images of the suprarenal IVC (arrows) show resolution of the filling defect in portal venous phaseBack to article page