Where does left subclavian vein come from?
Comes directly from the aortic arch
Name the difference between acute and chronic thrombosis
Acute thrombus can´t be seen and the only finding is the absence of compression. Chronic thrombus are hyperechoic and can be seen as a filling defect
Ultrasound of left arm showing absence of compressibility in the proximal third of the left brachiocephalic and subclavian veins, suspicious for venous thrombosis