title: Unusual case of urethral carcinoma.
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000188:drug therapy / Q000209:etiology / Q000473:pathology*; D006801:Humans; D008297:Male; D008727:Methotrexate / Q000627:therapeutic use; D008875:Middle Aged; D011183:Postoperative Complications; D014521:Urethra / Q000601:surgery*; D014523:Urethral Neoplasms / Q000188:drug therapy / Q000209:etiology / Q000473:pathology*
chemical_list: D008727:Methotrexate