case_images: PMC10746359_01
case_images: CT chest/abdomen/pelvis. CT scan demonstrating stenosis of a collateral to the IVC (white arrow). The IVC is indicated by the top black arrow. A collateral to the IVC is indicated by the bottom black arrow.
case_images: CRIVAM2023-5590280.001.jpg
case_images: PMC10746359_01_CRIVAM2023-5590280.001.jpg
case_images: fig1
case_images: IVC at the level of the superior mesenteric artery (Figure 1). IR performed a venogram demonstrating central occlusion with collateralization and thrombus present with no communication between the left brachiocephalic vein and SVC (Figure 2).
case_images: Interventional radiology venogram. Venogram demonstrating occlusion of the central portion of the left brachiocephalic vein with collateral flow from the peripheral remnant of the left brachiocephalic vein (white arrow) into a prominent collateral of the hemiazygos vein (black arrow) bypassing the occluded superior vena cava. Collateral flow from the left brachiocephalic vein can also be seen entering the left lower posterior intercostal vein (blue arrow). The inferior vena cava is indicated by the red arrow.
case_images: CRIVAM2023-5590280.002.jpg
case_images: PMC10746359_01_CRIVAM2023-5590280.002.jpg
case_images: fig2
case_images: IVC at the level of the superior mesenteric artery (Figure 1). IR performed a venogram demonstrating central occlusion with collateralization and thrombus present with no communication between the left brachiocephalic vein and SVC (Figure 2).