放疗技术进展可改善局部晚期非小细胞肺癌患者的预后  被引量:27

Technical advancement improves survival in patients with locally advanced non-small cell lung cancer (LA-NSCLC) receiving definitive radiotherapy

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作  者:王静波[1] 姜威[1] 吉喆[1] 曹建忠[1] 刘俪玭 门玉[1] 许猜 王小震[1] 惠周光[1] 梁军[1] 吕纪马[1] 周宗玫[1] 肖泽芬[1] 冯勤付[1] 陈东福[1] 张红星[1] 殷蔚伯[1] 王绿化[1] 

机构地区:[1]国家癌症中心中国医学科学院北京协和医学院肿瘤医院放疗科

出  处:《中华肿瘤杂志》2016年第8期607-614,共8页Chinese Journal of Oncology

基  金:国家自然科学基金(81272616、81541157)

摘  要:目的 评估不同放疗技术对接受根治性放疗的局部晚期非小细胞肺癌(LA-NSCLC)患者的生存影响和治疗相关毒性。方法 回顾性分析2000—2010年间接受≥50 Gy放疗的LA-NSCLC患者的临床病理资料,分析患者的总生存时间(OS)、癌症专项生存时间(CSS)、无局部区域进展生存时间(LRPFS)、无远处转移生存时间(DMFS)和无进展生存时间(PFS)。根据美国国立癌症研究所不良反应常见术语标准3.0版对放射性肺损伤(RILI)和放射性食管损伤(RIEI)进行分级。结果 946例LA-NSCLC患者中,二维放疗(2D-RT) 288例,三维适形放疗(3D-CRT) 209例,调强适形放疗(IMRT) 449例。全组患者的中位随访时间为84.1个月。2D-RT组、3D-CRT组和IMRT组患者的中位OS分别为15.8、19.7和23.3个月,5年生存率分别为8.7%、13.0%和18.8% (P〈0.001)。单因素分析显示,2D-RT组的OS、LRPFS、DMFS和PFS均显著低于3D-CRT组和IMRT组;与3D-CRT组比较,IMRT组的LRPFS显著延长,OS和DMFS有延长趋势。多因素分析显示,TNM分期、放疗技术和KPS评分是影响LA-NSCLC患者所有生存指标的的独立因素。IMRT组的OS、LRPFS、DMFS和PFS均显著优于2D-RT组。与3D-CRT组比较,IMRT组的DMFS显著延长(P=0.035),LRPFS有改善的趋势(P=0.073),OS和PFS的差异无统计学意义。2D-RT组、3D-CRT组和IMRT组患者≥2级RILI的发生率分别为29.3%(84/287)、26.6%(55/207)和14.0%(54/386,P〈0.001),≥2级RIEI的发生率分别为34.7%(100/288)、29.7%(62/209)和35.3% (147/416,P=0.342)。结论 放疗技术是影响LA-NSCLC患者预后的相关因素,先进的治疗技术能够改善LA-NSCLC患者的肿瘤局部控制率和总生存时间,同时降低了RILI的发生率。Objective This study aimed to evaluate the impact of technical advancement of radiation therapy in patients with LA-NSCLC receiving definitive radiotherapy (RT). Methods Patients treated with definitive RT ( ≥50 Gy) between 2000 and 2010 were retrospectively reviewed. Overall survival ( OS), cancer specific survival ( CSS), locoregional progression-free survival ( LRPFS), distant metastasis- free survival (DMFS) and progression-free survival (PFS) were calculated and compared among patients irradiated with different techniques. Radiation-induced lung injury (RILl) and esophageal injury (RIEI) were assessed according to the National Cancer Institute Common Terminology Criteria for Adverse Events 3.0 ( NCI-CTCAE 3.0). Results A total of 946 patients were eligible for analysis, including 288 treated with two-dimensional radiotherapy (2D-RT) , 209 with three-dimensional conformal radiation therapy (3D-CRT) and 449 with intensity-modulated radiation therapy (IMRT) respectively. The median follow-up time for the whole population was 84.1 months. The median OS of 2D-RT, 3D-CRT and IMRT groups were 15.8, 19.7 and 23.3 months, respectively, with the corresponding 5-year survival rate of 8.7%, 13.0% and 18.8%, respectively (P〈0.001). The univariate analysis demonstrated significantly inferior OS, LRPFS, DMFS and PFS of 2D-RT than those provided by 3D-CRT or IMRT. The univariate analysis also revealed that the IMRT group had significantly loger LRPFS and a trend toward better OS and DMFS compared with 3D-CRT. Multivariate analysis showed that TNM stage, RT technique and KPS were independent factors correlated with all survival indexes. Compared with 2D-RT, the utilization of IMRT was associated with significantly improved OS, LRPFS, DMFS as well as PFS. Compared with 3D-CRT, IMRT provided superior DMFS (P= 0.035), a trend approaching significance with regard to LRPFS (P = 0.073 ) but no statistically significant improvement on OS, CSS and PFS in multivariat

关 键 词: 非小细胞肺 放射疗法 二维放疗 三维适形放疗 调强适形放疗 预后 

分 类 号:R734.2[医药卫生—肿瘤]

 

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