Lymphoma presenting as a popliteal mass in a patient with rheumatoid arthritis.

de Beer, J D; Bogoch, E R; Smythe, H A · J Rheumatol · 1990

case_report · Level V

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Abstract

A patient with HLA-B27 and rheumatoid factor positive rheumatoid arthritis presented with a painless swelling in his popliteal fossa. Clinical features were atypical for a Baker's cyst, and subsequent investigation showed this lesion to be a primary malignant lymphoma.

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