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Arthritis, Rheumatoid

A chronic systemic disease, primarily of the joints, marked by inflammatory changes in the synovial membranes and articular structures, widespread fibrinoid degeneration of the collagen fibers in mesenchymal tissues, and by atrophy and rarefaction of bony structures. Etiology is unknown, but autoimmune mechanisms have been implicated.

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Tree Number(s): C05.550.114.154, C05.799.114, C17.300.775.099, C20.111.199

MeSH Unique ID: D001172

Entry Terms:

  • Rheumatoid Arthritis

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