非小细胞肺癌术后三维适形放疗与常规放疗结果比较

目的 回顾性比较非小细胞肺癌术后三维适形放疗(3DCRT)和常规放疗的疗效、失败模式及副反应.方法 分析3年余接受术后放疗的ⅠB～ⅢB期非小细胞肺癌患者162例,其中86例采用3DCRT,76例采用常规放疗.结果 总随访率91.5%,3DCRT和常规放疗的中位随访时间分别为29.4个月和33.8个月.3DCRT和常规放疗的1、2、3年无局部进展生存率分别为97.5%、83.2%、83.2%和84.3%、76.0%、65.6%(χ2=5.46,P=0.019),总生存率、无疾病进展生存率和无远转生存率均相似;总局部区域失败率分别为14.5%和33.3%(χ2=7.70 P=0.006),远处转移率两组相似.2～3级放射性肺炎发生率3DCRT显著低于常规放疗(11.6%:23.7% χ2=4.10,P=0.043).结论 术后放疗采用3DCRT技术比常规放疗技术能提高局部控制率,降低放疗相关副反应发生率.

Comparison of postoperative three-dimensional conformal radiotherapy with conventional radiotherapy for non-small cell lung cancer

Objective To compare postoperative three-dimensional conformal radiotherapy (3DCRT) and conventional radiotherapy (CR) in patients with non-small-cell lung cancer (NSCLC). Methods From Nov. 2002 to Mar. 2006,162 patients with stage ⅠB～ⅢB NSCLC receiving postoperative radiotherapy in our department were restrospetcively analyzed. Among them,86 received 3DCRT and 76 re-ceived CR. The survival outcome, pattern of failure and treatment-related side effects in both groups were an-alyzed. Results The median follow-up was 29.4 months in the 3DCRT group and 24 months in the CR group. The 1-,2- and 3-year local-regional free survival was 97.5% ,83.2% and 83.2% in 3DCRT group, and 84.3% ,76.0% and 65.6% in CR group(χ2= 5.46, P = 0.019), respectively. No statistically signifi-cant difference was found in the overall survival, disease-free survival or distant metastasis-free survival be-tween the two groups. The local-regional failure rate was statistically different between the two groups (14.5% vs 33.3% ,χ2 =7.70,P =0.006). The incidence of distant metastasis in the two groups was simi-lar. Radiation pneumonitis of NCI CTC grade 2-3 occurred in 10 patients(11.6%)in 3DCRT group and 18 (23.7%) in CR group,which was statistically different(χ2 =4.10,P=0.043). Conclusions Postopera-tive 3DCRT for NSCLC provides a better local-regional control and lower incidence of radiation pneumonitis compared with CR.