Table 1.

Patient and tumor characteristics.

Age	mean (years)	59.5
Gender	male	57
	female	0
Tobacco	yes	50
	no	7
Pack years	mean	41.4
	median	40
T-classification	1	10
	2	16
	3	17
	4	14
N-classification	0	11
	1	4
	2a	4
	2b	18
	2c	16
	3	3