title: [A case of retroperitoneal fibrosarcoma].
mesh_terms: D000328:Adult; D003131:Combined Modality Therapy; D003520:Cyclophosphamide / Q000627:therapeutic use; D005260:Female; D005354:Fibrosarcoma / Q000175:diagnosis* / Q000628:therapy; D006801:Humans; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis* / Q000628:therapy
chemical_list: D003520:Cyclophosphamide