J. MICHAEL GRELIER, M.D.; JOE G. HARDIN, M.D.
The sternoclavicular joint is commonly involved in rheumatoid arthritis, but a synovial cyst of this joint has not been recognized as a clinical problem. We report here a patient with such a cyst, which presented as an undiagnosed anterior mediastinal mass and required thoracotomy for definition.
The patient, a 32-year-old housewife, had the onset of symmetrical arthritis 5 years ago. The disease progressed rapidly to most of her peripheral joints but was only moderately disabling and sporadically treated until 2 years ago, when she suddenly developed bilateral foot drop associated with paresthesias of the legs. Treatment with systemic corticosteroids in
GRELIER JM, HARDIN JG. Synovial Cyst of Sternoclavicular Joint as Mediastinal Mass. Ann Intern Med. ;83:525–526. doi: 10.7326/0003-4819-83-4-525
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Published: Ann Intern Med. 1975;83(4):525-526.
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