PMC6032991_01
Acute prominent engorged abdominal collateral veins.
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Acute prominent engorged abdominal collateral veins were seen (Fig. 1).
Computed tomography angiography, coronal reconstruction, shows a confluent inferior vena cava stump (asterisk), dilated gonadal vein (right black arrow), dilated lumbar vein (left black arrow) and iliac veins (white arrowheads), and thrombosed right gonadal vein (long white arrow).
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A computed tomography angiogram (CTA) showed agenesis of the infrarenal segment of the IVC, DVT of both common iliac, lumbar and gonadal veins (Fig. 2), and patent renal veins draining in to the azygous system on the right and hemiazygous on the left.
PMC6032991_02
Computed tomography angiography, coronal reconstruction shows discontinuity of the inferior vena cava at suprarenal level (white arrow), duplicated inferior vena cava draining in to the left renal vein (black arrow).
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Renal venography shows both renal veins draining directly into the thrombosed renal inferior vena cava, the right renal vein (black arrow) drains through a collateral into the right ventricle and the left renal vein drains into the azygous system (white arrow), also through a collateral.
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IVC. Interruption of the suprarenal segment of the IVC was seen (Figure 5, Figure 6) with drainage of the right renal vein directly into the right ventricle (Fig. 6).
Right renal vein venography showing direct drainage into the right ventricle through a collateral (white arrow).
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IVC. Interruption of the suprarenal segment of the IVC was seen (Figure 5, Figure 6) with drainage of the right renal vein directly into the right ventricle (Fig. 6).