Abstract

Introduction Rheumatoid arthritis (RA) is a systemic inflammatory disorder, with various pulmonary manifestations, including parenchymal disease (interstitial lung disease), inflammation of the pleura (thickening and effusions), and inflammation of the airways and pulmonary vasculature (vasculitis and pulmonary hypertension). These changes may reflect chronic immune activation, increased susceptibility to infection, or direct toxicity from disease modifying or biological therapy. This case report describes a 69-year-old male with longstanding seropositive rheumatoid arthritis who developed severe pneumonia during adalimumab treatment, with subsequent persistent right basal pleural effusion. Treatment with abatacept has resulted in remission with significant decrease in size of the pleural effusion.

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