Objective To evaluate the efficacy and the side effects between in-volved-field irradiation(IFI)and elective node irradiation(ENI)in old patients of ad-vanced non-small cell lung cancer(NSCLC).

• 目的探讨老年晚期非小细胞肺癌(non-small cell lung cancer,NSCLC)在适形放射治疗中累及野照射组(involved-field irradiation,IFI组)与预防照射组(elective node irradiation,ENI组)的疗效及放射性损伤的比较。