title: Progressive interstitial lung disease from prolonged methotrexate therapy.
abstract: Progressive interstitial fibrosis with roentgenographic honeycombing developed in the case of a psoriatic patient who had been on a regimen of methotrexate for 18 years. Examination revealed a combined restrictive and obstructive defect in pulmonary mechanics and severe compromise of gas transfer across the pulmonary alveolar-capillary membrane. Improvement in the level of arterial blood gases and pulmonary diffusing capacity occurred after discontinuation of methotrexate therapy. Interstitial fibrosis of the lung is a potential complication of methotrexate therapy for psoriasis.
mesh_terms: D000368:Aged; D006801:Humans; D008171:Lung Diseases / Q000139:chemically induced* / Q000000981:diagnostic imaging; D008297:Male; D008727:Methotrexate / Q000009:adverse effects* / Q000627:therapeutic use; D011565:Psoriasis / Q000188:drug therapy; D011658:Pulmonary Fibrosis / Q000139:chemically induced / Q000000981:diagnostic imaging; D011859:Radiography
chemical_list: D008727:Methotrexate