作者对372例原发性肺癌放射治疗后局部再发的73例作了研究,其中43例进行了再照射治疗。初次照射后再照射组5年生存率为7.3％,尚再照射组为0％,两者间具有统计学差异(P<0.01)。从初次照射至再发全部病例平均为12个月,初次线量不足60Gy者,再发时间3～19个月,平均7个月。初次线量60Gy以上者再发时间为3～53个月,平 The authors studied 372 cases of primary recurrence of primary lung cancer after radiotherapy, of which 43 cases were treated with re-irradiation. The 5-year survival rate was 7.3% in the first irradiation group and 0% in the reradiation group. There was a statistically significant difference between the two groups (P<0.01). The average number of cases from the initial exposure to recurrence was 12 months. The initial amount was less than 60 Gy, and the recurrence time was 3 to 19 months, with an average of 7 months. The initial recurrence of 60 Gy or more recurrence time is 3 to 53 months.