[Development of malignancy during methotrexate treatment].
D001984:Bronchial Neoplasms / Q000139:chemically induced*; D002283:Carcinoma, Bronchogenic / Q000139:chemically induced*; D006801:Humans; D008297:Male; D008727:Methotrexate / Q000009:adverse effects* / Q000627:therapeutic use; D008875:Middle Aged; D009362:Neoplasm Metastasis; D011565:Psoriasis / Q000188:drug therapy
D008727:Methotrexate