DSA (angiography)
This attempted selective left upper limb angiography images reveal that the catheter colud not be hooked into the subclavian artery. The shot was taken while keeping the catheter in arch of aorta.
There was significant narrowing of proximal aspect of left subclavian artery, while its mid and distal parts (especially the superior and anterior aspects) are completey thrombosed. The vertebral artery is not opacified and rich collaterals are seen beyond proximal aspect of left subclavian artery. The internal mammary artery is opacified.
Partial thrombosis of origin of left common carotid artery is also seen.