Table 1 Summary of patient and tumor characteristics
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 | ||