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Table 2 Patients characteristics

From: Stereotactic Ablative Radiotherapy (SABR) in inoperable oligometastatic disease from colorectal cancer: a safe and effective approach

Patients number 82
Mean age (range) y 68 (40–87)
Sex (M:F) 62:21
Primary  
  Colon 58 (71%)
  Rectum 24 (29%)
TNM Primary Classification  
  T1 2 (3%)
  T2 17 (21)
  T3 57 (70%)
  T4 6(7%)
  N0 39 (48%)
  N1-2 43 (52%)
  M1 23 (28%)
   Only liver 42 (51%)
   Only lung 40 (49%)
Timing of liver metastases  
  Synchronous 23 (28%)
  Metachronous 59 (82%)
   DFI ≤ 12 months 14 (24%)
   DFI > 12 months 45 (76%)
Previous local treatments  
  Surgery 33 (40%)
  RFA or other 7 (9%)
Systemic treatments  
  Pre-SBRT chemotherapy 78 (95%)
  Post-SBRT chemotherapy 20 (24%)
Time of SBRT since diagnosis  
  <12 mo 7 (8%)
  >12 mo 75 (92%)
No. of prior systemic treatment regimens  
  0 4 (5%)
  1 15 (18%)
  2 25 (30%)
  3 23 (28%)
  >4 15 (19%)
Presence of stable extrahepatic and pulmonary metastatic disease at diagnosis  
  Yes 27 (33%)
  No 55 (67%)
Number of lesions treated 112
Number of lesions for patients Tot Liver Lung
  1 61 (74%) 35 (83%) 26 (65%)
  2 13 (16%) 4 (10%) 9 (23%)
  3 8 (10%) 3 ( 7%) 5 (12%)
  Mean volume (range) [cm3]  
  CTV 20.3 ± 24.09 (1.0-140.3)
  PTV 60.60 ± 42.16 (6.3-980.13)