title: Acute lung disease associated with low-dose pulse methotrexate therapy in patients with rheumatoid arthritis.
mesh_terms: D000208:Acute Disease; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000150:complications / Q000188:drug therapy*; D004305:Dose-Response Relationship, Drug; D005260:Female; D006801:Humans; D008297:Male; D008727:Methotrexate / Q000009:adverse effects* / Q000627:therapeutic use; D008875:Middle Aged; D011014:Pneumonia / Q000139:chemically induced / Q000000981:diagnostic imaging / Q000473:pathology; D011241:Prednisone / Q000008:administration & dosage; D013902:Radiography, Thoracic; D012130:Respiratory Hypersensitivity / Q000139:chemically induced* / Q000000981:diagnostic imaging / Q000473:pathology
chemical_list: D011241:Prednisone; D008727:Methotrexate