So, I have the MRA test results.
FINDINGS:Vasculature:Conventional arch anatomy. No abnormality involving the great vessels. Theleft subclavian artery lumen is focally narrowed by approximately 50%(axial MRA reconstruction image 63, series 503 and axial T1 postcontrastimage 66, series 6) as it passes between the scalene muscles withoutdetectable plaque, thrombus or wall enhancement.There is also multifocal subclavian venous narrowing at the followingsites:1. Mild venous narrowing in the retropectoral region.2. Severe focal venous stenosis in the costoclavicular space between theclavicle and first rib (axial image 70, series 6).3. Moderate to severe segmental narrowing at the interscalene triangle.Soft tissues:No thoracic apical mass, thyroid abnormality, AP normal adenopathy or othernew thoracic findings.Osseous structures:Left shoulder degenerative changes are noted.