"Patient Code (Appendix B)"^^ . "Rheumatoid Arthritis"^^ . . "Disease or Syndrome"^^ . . . "C0003873"^^ . . "Rheumatoid_Arthritis"^^ . "C2884"^^ . . "Rheumatoid ArthritisSYNCITCGA" . "FDA"^^ . "ARTHRITIS, RHEUMATOIDPTFDA1724" . "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.NCI" . "rheumatoid arthritisPTNCI-GLOSSCDR0000455398" . "RHEUMATOID ARTHRITISSYFDA1724" . "Rheumatoid ArthritisPTNCI" . "An autoimmune disease that causes pain, swelling, and stiffness in the joints, and may cause severe joint damage, loss of function, and disability. The disease may last from months to a lifetime, and symptoms may improve and worsen over time.NCI-GLOSS" . . "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.MSH2003_2003_05_12" . "Rheumatoid Arthritis"^^ . .