title: Control of primary osteosarcoma with chemotherapy.
abstract: High-dose methotrexate with citrovorum factor "rescue" (MTX-CF) produced an apparent complete response of the primary tumor in three patients with osteosarcoma. The response was sustained with MTX-CF, intra-arterial cis-diamminedichloroplatinum II (CDP) and Adriamycin (doxorubicin) for 18 months. Treatment was then electively discontinued. Local recurrence occurred in two patients, 6 and 4 months later, respectively. MTX-CF was reinstated and a complete response was again achieved in one patient. This has been maintained for 15+ months with MTX-CF and intra-arterial CDP administered for 13 of the 15+ months. Reinduction with MTX-CF failed in the second relapsed patient but an apparent remission was again achieved with radiation and intra-arterial CDP. This has been maintained with intravenous CDP, cyclophosphamide and phenylalanine mustard for 14+ months. A complete response in the primary tumor was still present in the nonrelapsed patient, 42 months from diagnosis. All patients have remained free of pulmonary metastases, 40+ to 42+ months from diagnosis.
mesh_terms: D000293:Adolescent; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D001859:Bone Neoplasms / Q000188:drug therapy*; D002648:Child; D002945:Cisplatin / Q000008:administration & dosage; D003131:Combined Modality Therapy; D004334:Drug Administration Schedule; D005260:Female; D005266:Femoral Neoplasms / Q000188:drug therapy; D005500:Follow-Up Studies; D006801:Humans; D007085:Ilium / Q000187:drug effects; D007261:Infusions, Intra-Arterial; D002955:Leucovorin / Q000008:administration & dosage; D008297:Male; D008727:Methotrexate / Q000008:administration & dosage; D009364:Neoplasm Recurrence, Local / Q000188:drug therapy; D012516:Osteosarcoma / Q000188:drug therapy*; D013977:Tibia / Q000187:drug effects
chemical_list: D002945:Cisplatin; D002955:Leucovorin; D008727:Methotrexate