Rheumatoid arthritis (RA) is a chronic inflammatory disorder characterized by synovial inflammation of joints causing typical symptoms of small joints inflammatory polyarthritis. It is the most common form of chronic inflammatory arthritis. It involves joints of the hands and larger joints as well. It also presents with extra-articular manifestations in the form of fatigue, subcutaneous nodules, lung involvement, pericarditis, peripheral neuropathy, vasculitis, and hematological abnormalities such as anemia of chronic disease, neutropenia, splenomegaly, Felty syndrome, leukemia, and lymphomas [1].
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