Thoracic outlet syndrome

Discussion:

Subclavian vessel compression in the costoclavicular space accounts for less than 10% of cases with thoracic outlet syndrome. In this case, the subclavian artery compromise is due to a combination of a focal levoconvex scoliosis and an abnormal 1st/2nd rib complex.

Technical note: IV contrast administration should occur contralateral to the side under investigation; as in this case where injection was made via a cannula in the right antebubital fossa. Otherwise dense contrast medium within the subclavian vein will cause streak artefact in the region of interest.

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