术后局限期小细胞肺癌预防性脑照射疗效分析
Clinical efficacy of prophylactic cranial irradiation for patients with surgically resected small cell lung cancer
目的 探讨局限期小细胞肺癌(SCLC)术后行预防性脑照射(PCI)的疗效.方法 回顾分析2003-2015年浙江省肿瘤医院收治的接受根治性手术治疗的52例局限期SCLC患者资料.根据术后是否行PCI治疗分为PCI组(19例,Ⅰ、Ⅱ、Ⅲ期分别为5、5、9例)和非PCI组(33例,Ⅰ、Ⅱ、Ⅲ期分别为12、5、16例).采用Kaplan-Meier法生存分析,Cox模型多因素预后分析.结果 PCI组和非PCI组中位总生存时间分别为32.9、20.4个月,2年总生存率高于非PCI组(72%∶38%,P=0.023);中位颅内无进展生存时间分别为32.5、17.1个月,PCI组2年颅内无进展生存率优于非PCI组(89%∶53%,P=0.026).亚组分析结果显示PCI治疗可使Ⅲ期患者总生存获益(P=0.031),而Ⅰ、Ⅱ期患者生存获益不显著(P=0.924、0.094).多因素Cox回归分析结果显示PCI是总生存的影响因素(HR=0.330,P=0.041).结论 SCLC术后行PCI治疗可降低术后脑转移的发生率,并使SCLC患者总OS获益.
更多Objective To evaluate the clinical efficacy of prophylactic cranial irradiation (PCI) in the treatment of surgically resected small cell lung cancer (SCLC).Methods Clinical data of SCLC patients undergoing radical resection surgery in Zhejiang Cancer Hospital from 2003 to 2015 were retrospectively analyzed.According to the treatment modality,all patients were allocated into the PCI and non-PCI groups.A total of 52 patients were finally included,including 19 patients in the PCI group (5 cases of stage Ⅰ,5 stage Ⅱ and 9 stage Ⅲ) and 33 in the non-PCI group (12 cases of stage Ⅰ,5 stage Ⅱ and 16 stage Ⅲ).Kaplan-Meier method was utilized for survival analysis.Cox proportional hazards model was adopted to analyze clinical prognosis.Results The median survival time was 32.9 months in the PCI group,and 20.4 months in the non-PCI group.The 2-year overall survival rate was 72% in the PCI group,significantly higher than 38% in the non-PCI group (P=0.023).The median brain metastasis-free survival (BMFS) was 32.5 months in the PCI group,and 17.1 months in the non-PCI group.In the PCI group,the 2-year BMFS rate was 89%,significantly better than 53% in the non-PCI group (P=0.026).Subgroup analysis demonstrated that PCI could confer survival benefit to patients with p-stage Ⅲ (p=0.031) rather than p-stage Ⅰ (P=0.924) and Ⅱ (P=0.094) counterparts.Multivariate analysis revealed that PCI (HR=0.330,P=0.041) was an independent prognostic factor of the overall survival.Conclusions PCI can reduce thr risk of brain metastasis rate and improve the overall survival of patients with surgically resected SCLC.
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