。TP方案是标准NSCLC化疗方案。 同期放化疗提高局部控制率和远处微小转移灶的控制率,但也增加放射相关的急性黏膜反应,如放射性食管炎和放射性肺炎。3DCRT精确确定放疗范围这样就能尽量保护所需要的组织和器官,减轻毒副作用,Belderbos等报道3DCRT治疗NSCLC结果明显好于普通放疗,而放射性肺炎及食管反应明显下降[8]。本临床观察资料显示,两组放射性食管炎和放射性肺炎发生率分别为46.7%、82.4%和33.3%、61.8%,3DCRT组毒副作用较普通放疗组轻,Ⅲ、Ⅳ度放射性肺炎和放射性食管炎明显低于普通放疗组(P<0.05)。同时3DCRT组骨髓抑制轻,其中Ⅲ、Ⅳ度白细胞减少、贫血较普通放疗组差异有显著性。 2005年ASCO会上,RTOG(radiation therapy oncology group)将RTOG 9106、9204、9410试验的结果进行第二次分析[9],发现治疗时间的延长是影响总生存率及无疾病进展生存率最明显的指标,治疗时间比原计划超过5天以上的患者与其他患者相比,中位生存期分别为14.8个月、19.5个月(P<0.0001),而影响治疗时间延长最主要的因素是严重的急性食管炎(P<0.0001)。本临床观察资料普通放疗组有5例因毒副作用延长治疗时间,延长最长时间为10天,其中3例为急性食管炎。笔者目前仅观察近期有效率和1年生存率,近期有效率无差别,1年生存率略提高但差异无显著性,中位生存期、总生存期在观察中。3DCRT组临床症状改善较普通放疗组提高,其中胸痛减轻差异有显著性。 此项研究表明ⅢAN2期NSCLC患者,两种治疗方法局部控制率和1年生存率差异无显著性,但使用3DCRT组毒副作用减轻,症状改善明显,生存质量提高,目前总生存率还在观察中。笔者认为若经济条件允许,特别是老年患者建议使用3DCRT联合TP方案。【参考文献】 1 Schaake-koning C,Van den Bogeat W,Dalesio O,et al.Effects of concomitant cisplatin and radiotherapy of locally advanced,unreseactable,non-small cell lung cancer.N Eng J Med,1992,326:524-530. 2 Jeremic B,Shibamoto Y,Acimvic L,et al.Hyperfractionated radiation therapy with or without concurrent low-dose daily carboplatin/etoposide for stage Ⅲ non-small cell lung cancer:a randomized study.J Clin Oncol,1996,14(4):1165-1170. 3 Chien CR.Intra-thoracic failure pattern and survival status following 3D conformal radiotherapy for non-small cell lung cancer:a preliminary report.Jpn J Clin Oncol,2001,31(2):55-60. 4 Emami B.The impact of regional nodal radiotherapy(dose/volume)on regional progression and survival in unresectable non-small cell lung cancer:an analysis of RTOG data.Lung Cancer,2003,41:207-214. 5 Rosenzweig KE.Elective nodal irradiation in the treatment of non-small cell lung cancer with threedimensional conformal radiation therapy.Int J Radiat Oncol Biol Phys,2001,50:681-685. 6 Wu KL,Jiang GL,Liao Y,et al.Three dimensional conformal radiation therapy for non-small cell lung cancer:A phase Ⅰ/Ⅱ dose escalation clinical trial.Int J Radiation Oncology Biol,Phys,2003,57:1336-1344. 7 Milas L,Hunter NR,Mason KA,et al.Role of reoxygenation in induction of enhancement of tumor radiorespones by paclitaxel.Cancer Res,1995,55:3564-3568. 8 Burkes RL,Ginsberg RJ,Shepherd FA,et al.Induction chemotherapy with mitomycin,Vindesine,and cisplation for stage Ⅲ unresectable non-small cell lung cancer:results of the Toronto phase Ⅱ trial.J Clin Oncol,1992,10:580-586. 9 Belderbos JS,De Jaeger K,Heemsdergen WD,et al.Fist reuslts of a phase Ⅰ/Ⅱ dose escalation trial in non-small cell lung cancer using three-dimensional conformal radiotherepy.Radionther Oncol,2003,66(2):119-126. 上一页 [1] [2]
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