Methotrexate-induced carcinoma?
D002295:Carcinoma, Transitional Cell / Q000139:chemically induced*; D006801:Humans; D007165:Immunosuppression Therapy; D008297:Male; D008727:Methotrexate / Q000009:adverse effects*; D008875:Middle Aged; D009303:Nasopharyngeal Neoplasms / Q000139:chemically induced*; D009369:Neoplasms / Q000276:immunology; D011565:Psoriasis / Q000188:drug therapy
D008727:Methotrexate