Fig. 1

Angiography. a The catheter was inserted into the artery near the bifurcation of the right vertebral artery and subclavian artery. b An intravascular stent and a guidewire, which was inserted into the right subclavian artery. c An expanded stent and right vertebral artery flow. A black arrow head indicates a central venous catheter migrated into the right subclavian artery. A white arrow head indicates a guidewire for an intravascular stent. Black arrows indicate an intravascular stent. White arrows indicate corresponding arteries