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目的 观察大剂量甲氨蝶呤(MTX)、顺铂(DDP)、吡柔比星(THP)和异环磷酰胺(IFO)4种药物优化组合方案治疗肢体骨肉瘤的疗效及毒副反应.方法 回顾性分析中南大学湘雅二医院2007年7月至2011年12月应用优化新辅助化疗方案(MTX 200 mg/kg静滴6h,d1;用药12h后CF解救12次,每次9mg;DDP 100 mg/m2、THP 30 mg静滴d8-10;IFO 3.0g/m2静滴d16-18,美司那与IFO等量,每天IFO用后第0、3、6、9小时静滴)治疗的125例骨肉瘤患者的临床资料,观察此化疗方案的疗效及毒副反应.结果 优化新辅助化疗方案治疗Ⅱa期和Ⅱb期骨肉瘤的有效缓解率分别为36.4％ (8/22)和79.6％ (82/103),差异有统计学意义(P＜0.05).125例患者中52例(41.6％)患者疾病复发或转移,47例(37.6％)患者死亡,二年无瘤生存率55.2％,总生存率62.4％,生存时间(17.7±8.3)个月.患者化疗期间主要毒副反应为骨髓抑制和消化道反应如恶心呕吐等,其中Ⅲ-Ⅳ级粒细胞减少的发生率为71.2％,Ⅲ-Ⅳ级恶心和Ⅲ-Ⅳ级呕吐的发生率分别为37.6％和13.6％.结论 将大剂量MTX、DDP、THP和IFO这4种药物进行优化组合治疗骨肉瘤患者具有疗效确切、可耐受的特点.“,”Objective To investigate the efficacy and side effects of new combination of high-dose methotrexate (MTX),cisplatin (DDP),pirarubicin (THP),and ifosfamide (IFO) in the treatment of extremity osteosarcoma patients.Methods A retrospective analysis was conducted for 125 osteosarcoma patients treated with the optimized neo-adjuvant chemotherapy combined with the four drugs mentioned above (MTX 200 mg/kg iv 6 h d1,CF 9 mg at one time,12 times; DDP 100 mg/m2,THP 30 mg iv,d8-10;IFO 3.0 g/m2 iv d16-18,mesna after IFO for 0,3,6,9 h).The efficacy and side effects of the therapeutic scheme were evaluated.Results The effective salvage rates of Ⅱ a and Ⅱb schemes were 36.4％ (8/22) and 79.6％ (82/103) with a statistical significance (P ＜ 0.05).The 2-year survival rate of schemes was 62.4％,and the survival time was(17.7 ± 8.3)months.The main side effects were myelo-suppression,nausea,and vomiting,etc.The incidence rate of myelo-suppression,nausea,and vomiting with grade Ⅲ-Ⅳ accounted for 71.2％,37.6％,and 13.6％,respectively.Conclusions The optimized neo-adjuvant therapy strategy based on high-dose MTX,DDP,THP,and IFO is effective in the treatment of osteosarcoma.