|
T/M
|
N0
|
N1
|
N2
|
N3
|
|---|
|
T1a (≤2 cm)
|
IA
|
IIA
|
IIIA
|
IIIB
|
|
T1b (>2 cm)
|
IA
|
IIA
|
IIIA
|
IIIB
|
|
T2a (≤5 cm)
|
IB
|
IIA
|
IIIA
|
IIIB
|
|
T2b (>5 cm)
|
IIA
|
IIB
|
IIIA
|
IIIB
|
|
T3 (>7 cm)
|
IIB
|
IIIA
|
IIIA
|
IIIB
|
|
T3 (invasion)
|
IIB
|
IIIA
|
IIIA
|
IIIB
|
|
T3 (same lobe nodules)
|
IIB
|
IIIA
|
IIIA
|
IIIB
|
|
T4 (extension)
|
IIIA
|
IIIA
|
IIIB
|
IIIB
|
|
T4 (pleural effusion)
|
IV
|
IV
|
IV
|
IV
|
|
M1a (ipsilateral lung)
|
IIIA
|
IIIA
|
IIIB
|
IIIB
|
|
M1a (contralateral lung)
|
IV
|
IV
|
IV
|
IV
|
|
M1b (distant)
|
IV
|
IV
|
IV
|
IV
|
- The T component describes the extent of the primary tumour in terms of both size and local invasion. The N component describes regional lymph node involvement and the M component denotes whether distant metastases are present (M1) or not (M0).
