0
1
4
14
2
8
15
3
5
10
20
25
30
35
Tis
T1
T2
T3
T4
N+
N-
The importance of lymphnodal spread
Rice ET et Al – Ann Thorac Surg – 1998
SCC
57.1%
48.3%
33.3%
20.0%
0%