\n\n
目前,质子重离子治疗在肝癌治疗中越来越受到关注。
\n\n肝细胞癌患者多有慢性肝炎、肝硬化等基础疾病,且可能经过多次介入治疗,因此肝功能相对较差。而质子重离子治疗可显著降低正常肝组织受照剂量,因此可降低放射性肝损伤的发生率。
\n\n2011年,美国加州的一项 II 期临床研究,评估了原发性肝癌质子治疗的安全性和有效性[1]。该z研究分析了 76 例采用质子治疗的合并肝硬化的肝细胞癌患者,最终所有患者完成了全程治疗,中位无进展生存期为 36 个月,放疗前肝功能分级 Child A、B、C 患者的中位生存期分别为 34、13、12 个月,急性毒性包括轻度乏力、皮疹等。
\n\n日本一项前瞻性研究纳入了 51 例采用质子治疗的肝细胞癌患者[2],结果显示 3 年和 5 年局部控制率分别为 94.5% 和 87.8%,3 年和 5 年生存率分别为 49.2% 和 38.7%,没有严重肝损伤发生。
\n\n韩国一项回顾性研究分析了 27 例采用质子放疗的合并门脉癌栓的肝细胞癌患者[3],结果显示中位生存期为 13.2 个月,且无 3 级以上毒性发生。
\n\n日本一项前瞻性研究纳入 24 例肝细胞癌患者(部分为复发患者)[4],采用碳离子治疗,结果显示 5 年局部控制率为 81%,5 年生存率为 25%,且无严重肝损伤发生。
\n\n结合目前的研究结果来看,对于不可手术的肝癌患者,质子重离子治疗是一种相对安全且有效的局部治疗手段,尤其在肝功能保护方面具有优势,但需综合评估肿瘤及周围重要器官的具体情况。
\n\n感谢北京大学肿瘤医院放疗科王晓航医生参与本文撰写。
\n',op_copyright:i,ref_info:["Bush DA, Kayali Z, Grove R, et al.The safety and efficacy of high-dose proton beam radiotherapy for hepatocellular carcinoma: a phase 2 prospective trial[J].Cancer. 2011,117(13):3053-3059.","DeLaney TF.Proton therapy in the clinic[J].Front Radiat Ther Oncol. 2011, 43:465-485.","Lee S U, Park J W, Kim T H, et al.Effectiveness and safety of proton beam therapy for advanced hepatocellular carcinoma with portal vein tumor thrombosis[J].Strahlentherapie und Onkologie, 2014, 190(9): 806-814.","Kato H, Tsujii H, Miyamoto T, et al.Results of the first prospective study of carbon ion radiotherapy for hepatocellular carcinoma with liver cirrhosis1[J].International Journal of Radiation Oncology* Biology* Physics, 2004, 59(5): 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