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Comparison of the abnormal bony tubercle from a patient with PSS with the medial aspect of a normal rib. The normal rib has a groove for the SV and SA. The bony tubercle forms a tighter SC joint and compresses SV as it crosses over the first rib. PSS, Paget-Schroetter syndrome; SV, subclavian vein; SA, subclavian artery; SC, costo-sternal.
