RESUMO
A 17-year-old male, who was involved in a baseball club, presented to our emergency department with the complaint of gradual onset of swelling of his right arm. Contrast-enhanced computed tomography showed obstruction of the proximal portion of the right subclavian vein and pulmonary thromboembolism. Venography confirmed an occluded right subclavian vein. The patient was diagnosed with right subclavian vein thrombosis, which is referred to as Paget-Schroetter syndrome (PSS). An ultrasonography for the affected subclavian vein was helpful not only for making an accurate diagnosis of PSS, but also for verifying dynamic venous flow changes depending on the forearm position.
RESUMO
Subclavian artery stenosis can cause a flow reversal-so-called steal-not only in the ipsilateral vertebral artery, but also in the internal mammary artery in patients with a history of coronary-artery bypass grafting. Subclavian artery stenosis is also associated with peripheral artery disease elsewhere. We report a novel finding of axillo-femoral bypass steal due to subclavian artery stenosis identified by vascular ultrasonography.
