Figure 1 (A) Right upper limb venogram via right brachial access showing multiple right upper limb collaterals secondary to right subclavian occlusive thrombus. (B) 10 mm angioplasty balloon inflated in the right subclavian vein and distal right brachiocephalic vein with central stenosis of the right subclavian vein. (C) Venogram post‐angioplasty balloon dilation, intravenous TPA and heparin infusion. Patent right subclavian vein lumen with flow of contrast to the superior vena cava.