Subclavian artery aneurysms are rarely seen in the clinical setting, representing 1% of all peripheral artery aneurysms. The cause of a subclavian artery aneurysm is variable, and the symptoms are sometimes vague. Although other nonsonography imaging modalities are more likely to incidentally diagnose a subclavian artery aneurysm, sonographers must be aware of a subclavian artery aneurysm as a possible incidental finding to help prevent a potential fatal rupture.
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