Methotrexate-induced non-specific interstitial pneumonitis
History of rheumatoid arthritis. Chronic cough.
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Subpleural reticular opacity with a basal predominance with immediate subpleural sparing. There is associated traction bronchiectasis. No honeycombing. Small bilateral pulmonary nodules.
The patient had been treated with methotrexate for her rheumatoid arthritis and this is the presumed cause of the NSIP.