PMC5109255_01
Contrast imaging of the Aorto-Venous system showing dilatation of the Left External Iliac Vein and commencement of the IVC (L4-L5 Disc Level).
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However, venography of abdomen and thighs revealed, thrombotic occlusion of deep veins of left thigh, with dilatation of left and right external iliac veins, left and right common iliac veins and commencement of IVC from the level of L4 vertebra and cranially upto its mid retrohepatic portion (Fig. 1, Figs. 2 and 3).