Table 1. Patient and treatment characteristics.

Characteristics	N
Age, 38-81 (median 51) years
Gender
Male	17
Female	17
Primary site
Colorectal	13
Head and neck	6
Breast	4
Melanoma	4
Sarcoma	4
Renal carcinoma	3
Follow-up
Range, 2.4 to 54 months
Median FU period, 16.7 months
Isocenter dose (Gy)
40	11
45	4
50	18
60	1
Number of lung lesions treated per patient
N=1	19
N=2	7
N=3	5
N=5	3