Clavicular Hyperostosis with Enthesopathy, Hypergammaglobulinemia, and Thoracic Outlet Syndrome

Abstract
The syndrome of sternocostoclavicular hyperostosis with painful bilateral clavicular enlargement and subclavian vein obstruction was recently described in older adults. A similar syndrome is reported, but without sternal or costal involvement, in a young man with hypergammaglobulinemia, vasculitis, enthesopathy and oligoarthritis.

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