N0期食管鳞癌术后预防性放疗价值探讨

摘要

目的 评价N0期食管鳞癌术后预防性放疗价值.方法 分析1993年1月至2006年12月我院收治的食管癌术后病理诊断证实鳞癌、无淋巴结转移及远处转移的N0期患者859例,其中单纯手术760例,术后放疗99例.术后3～4周开始放疗,放疗中位总剂量50 Gy,分25次,2 Gy/次,5次/周,5周完成.结果 5年生存率手术组和术后放疗组分别为72.2%和77.4%(x2=0.13,P>0.05).分层分析术后放疗较单纯手术可提高pT4期及病变长度>5cm的生存率,5年生存率分别为67.1%对34.6%(x2=7.72,P<0.05)和81.3%对70.2%(x2=4.01,P<0.05),并能降低pT4期瘤床复发率.结论 N0期食管鳞癌术后预防性放疗可明显提高pT4期及病变长度>5cm的生存率和降低pT4期瘤床复发率.%Objective To evaluate the value of postoperative prophylactic radiotherapy for N0 e-sophageal squamous carcinoma. Methods From January 1993 to December 2006,859 patients with patho-logically staged N0 and M0 esophageal squamous cell carcinoma were included in this study. Among them, 760 received surgery alone, and 99 received surgery followed by postoperative radiotherapy. Radiotherapy started within 3 to 4 weeks after surgery. The median total dose was 50 Gy(2 Gy/F,5 F/w). Results In surgery alone group and postoperative radiotherapy group,the 5-yeur overall survival rotes were 72.2% vs 77.4% (X2 =0. 13,P >0.05) for all patients,34.6% vs67.1% (X2 =7.72,P <0.05) forpT4 disease,and 70.2% vs 81.3% (X2 =4.01 ,P <0.05) for tumor length >5 cm. Postoperative radiotherapy could lower the recurrence rate for pT4 patients. Conclusions For patients with NO esophageal squamous carcinoma, postoperative radiotherapy can significantly improve the survival for pT4 and tumor length > 5 cm,and also re-duce the recurrence for pT4 patients.