Skip to main content

Table 2 Assessment of prognostic factors for overall survival

From: Carbon ion radiotherapy for oligo-recurrent lung metastases from colorectal cancer: a feasibility study

Factor Group No. of patients 3-year overall surviaval Log-rank test P value
Sex Male 20 62.9% 0.47
  Female 14 36.9%  
Age (years) ≥63 21 64.0% 0.13
  <63 13 25.0%  
Primary cancer Colon 15 53.9% 0.87
  Rectum 19 44.6%  
Previous systematic chemotherapy Yes 18 39.6% 0.79
  No 16 56.8%  
Previous pulmonary resection No 10 47.6% 0.60
  Yes 24 68.1%  
Interval between initial surgery and first CIRT ≥36 month 23 67.6% 0.19
  <36 months 11 30.3%  
CEA before first CIRT <5 20 42.9% 0.98
  ≥5 14 68.1%  
Maximun diameter of lung tumor ≥18 mm 21 51.8% 0.60
  <18 mm 13 50.0%  
  1. Abbreviations: CEA carcinoembryonic, CIRT carbon ion radiotherapy.