How does rheumatoid arthritis (RA) affect the lungs?

Updated: Feb 07, 2020
  • Author: Howard R Smith, MD; Chief Editor: Herbert S Diamond, MD  more...
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Answer

RA involvement of the lungs may take several forms, including pleural effusions, interstitial fibrosis, nodules, and bronchiolitis obliterans organizing pneumonia. Methotrexate therapy can induce interstitial fibrosis that may be difficult to distinguish from that which naturally occurs in patients with RA.


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