IMRT

 Any difference in age, sex, PS, histology, T stage or tumour location  Median follow up was 40,2 months in SABR group and 35.4 months in surgery group  All stage I NSCLC and were operable for lobectomy with PS 0-2  TC-PET for staging  20 patients lobectomies, 5 video-assisted thoracotomy lobectomies, 1 video-assisted thoracotomy biopsy, 1 aborted resection during surgery due to disease progression  STARS: 16 patients peripherally lesions 54 Gy/3 fr; 4 patients central lesions 50 Gy/4 fr  ROSEL: 6 patients 54 Gy/3 fr in 5-8 days, 5 patients 60 Gy/5 fr in 10-14 days