Parameter  No. of patients (n=23) Gender    Male 7  Female 16 Age (years)   Median (range) 54 (43-67) Primary tumor  Breast 8  Lung NSCLC 11 SCLC 4 KPS before re-irradiation 100 ~ 70 4 60 ~ 40 7 < 30 12 RPA classification I 3 II 1 III 19

Table 1: Clinical patient characteristics.