Table 2.

American Joint Committee on Cancer (AJCC) classification (8th ed): stage aggregation9

Stages (clinical)		T	N	M	Stages (pathologic)		T	N	M
0		Tis	N0	M0	0		Tis	N0	M0
1		T1	pN0	M0	1		T1	pN0	M0
2	A	T2/3	pN0	M0	2	A	T2/3	pN0	M0
	B	T4	cN0	M0		B	T4	cN0	M0
3		T0–4	N1–3	M0	3	A	T1–4	N1a(sn) or N1a	M0
						B	T0	N1b	M0
						C	T1–4	N1b–3	M0
4		T0–4	Each N	M1	4		T0–4	Each N	M1