Stages | Definitions |
---|---|
T-Stage | |
T1 | Primary tumor confined to trachea; size < 2 cm |
T2 | Primary tumor confined to trachea; size > 2 cm |
T3 | Spread outside the trachea but not to adjacent organs or structures |
T4 | Spread to adjacent organs or structures |
Tx | Unkown or cannot be assessed |
N-Stage | |
N0 | No evidence of regional nodal disease |
N1 | Clinical or histological evidence of regional nodal disease |
Nx | Unknown or cannot be assessed |
M-Stage | |
M0 | No evidence of distant metastases |
M1 | Clinical or histological evidence of distant metastases |
Mx | Unknown or cannot be assessed |
Pn-Stage | |
Pn0 | No histological evidence of perineural invasion |
Pn1 | Histological evidence of perineural invasion |
Pnx | Unkown or cannot be assessed |