Skip to main content

Table 1 Summary of patient and tumor characteristics

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

Variables Distribution   (%)
Total patients   34  
Total lesions   44  
Gender
  Male 20 (59)
  Female 14 (41)
Age (years)
  Median 63  
  Range 34-79  
Primary cancer
  Colon 15 (44)
  Rectum 19 (56)
Previous systemic chemotherapy
  Yes 18 (53)
  No 16 (47)
Previous pulmonary resection
  Yes 10 (29)
  No 24 (71)
Disease-free interval until lung metastasis (months)
  Median 46.3  
  Range 10.8-100.9  
Carcinoembryonic antigen (CEA) before CIRT
  Median 3.5  
  Range 0.5-650.0  
Number of lesions treated by CIRT (per patient)
  1 28  
  2 4  
  3 0  
  4 2  
Maximum diameter of lung tumor (mm)
  Median 18.0  
  Range 5.0-60.0  
Tumor location (lobe)
  Left upper/lower 17/5  
  Right upper/middle/lower 10/3/9  
Fractionation sheme
  60 GyE/4 fr 31  
  52.8 GyE/4 fr 6  
  64.8 GyE/12 fr 2  
  57.6 GyE/16 fr 1  
  60 GyE/12 fr 1  
  60 GyE/8 fr 1  
  48 GyE/8 fr 1  
  44 GyE/1 fr 1  
Follow-up (months)
  Median 23.7  
  Range 6.1-167.0  
  1. Abbreviations: CIRT carbon ion radiotherapy.