Table 1.

TNM Stage grouping for breast cancer according to the AJCC Cancer Staging Manual [24]

AJCC	TNM			NCCN
Stage I	T1	N0	M0	Primary operable breast cancer
Stage IIA	T0	N1	M0
	T1	N1	M0
	T2	N0	M0
Stage IIB	T2	N1	M0
	T3	N0	M0
Stage IIIA	T3	N1	M0
	T0	N2	M0	Locally advanced breast cancer
	T1	N2	M0
	T2	N2	M0
	T3	N2	M0
Stage IIIB	T4	N0	M0
	T4	N1	M0
	T4	N2	M0
Stage IIIC	Any T	N3	M0
Stage IV	Any T	Any N	M1	Metastatic disease