老年局限期SCLC放疗时机选择探讨

摘要

Objective To investigate the effect of the timing of radiotherapy on the prognosis of limited-stage small cell lung cancer (LS-SCLC) in the elderly. Methods A retrospective analysis was performed on the clinical data of 80 elderly patients with LS-SCLC who were treated with radical sequential thoracic chemoradiotherapy from 2008 to 2014.The correlations of SER(time from the start of any treatment to the end of radiotherapy) and the number of induction chemotherapy cycles with overall survival(OS) and progression-free survival (PFS) rates was analyzed. The treatment outcomes were compared between early radiotherapy group (no later than 3 cycles of induction chemotherapy,n=37) and late radiotherapy group (after 3 cycles of induction chemotherapy,n=43).The Kaplan-Meier method was used for survival analysis. Results In all patients,the median OS and PFS were 23.5 and 13.3 months respectively. SER was significantly correlated with OS and PFS (P=0.001;P=0.001).The median OS in patients undergoing radiotherapy after 2,3,4,5,and 6 cycles of induction chemotherapy was 33.2,26.7,20.6,16.9,and 17.9 months (P=0.000),respectively. The median OS time and 1-,2-,and 5-year OS rates were 27.8 months, 87%,62%,and 34%,respectively,in the early radiotherapy group,and 17.9 months,74%,37%,and 15%, respectively,in the late radiotherapy group (P=0.017).The median PFS time and 1-,2-,and 5-year PFS rates were 17.1 months,65%,43%,and 28%,respectively,in the early radiotherapy group,and 11.9 months,49%,21%,and 14%,respectively,in the late radiotherapy group( P= 0.022). Conclusions Shorter SER achieves better treatment outcomes in elderly patients with LS-SCLC undergoing sequential chemoradiotherapy. Early radiotherapy provides a survival benefit for patients.%目的 探讨老年局限期SCLC放化疗中放疗时机选择对预后影响.方法 回顾分析2008—2014年行根治性胸部序贯放化疗的80例老年局限期SCLC患者的临床资料,分析从治疗开始至放疗结束时间(SER)、诱导化疗周期数与OS及PFS的关系,进而比较早放疗组(诱导化疗周期数≤3个37例)与晚放疗组(诱导化疗周期数>3个43例)疗效的差别.采用Kaplan-Meier法进行生存分析.结果 全组中位 OS、PFS 分别为23.5、13.3个月;SER 与 OS、PFS 差异有统计学意义(P=0.001、0.001);2、3、4、5、6周期诱导化疗后接受放疗病例的中位OS分别为33.2、26.7、20.6、16.9、17.9(P=0.000);中位OS及1、2、5年OS早放疗组分别为27.8个月及87%、62%、34%,晚放疗组分别为17.9个月、74%、37%、15%(P=0.017);中位PFS及1、2、5年PFS早放疗组分别为17.1个月及65%、43%、28%,晚放疗组分别为11.9个月及49%、21%、14%(P=0.022).结论 老年局限期SCLC序贯放化疗患者SER越短疗效越好,早放疗可使生存获益.