Table 1.

Staging of breast cancer (see text).

	TNM			Stage
Non-invasive	Tis	N0	M0	0
Early invasive	T1−2	N0−1	M0	1, 2A or B
	T3	N0	M0	2B
Advanced
Locally advanced	Tany	N2	M0	3A
	T3	N1−2	M0	3A
	T4	N0−3	M0	3B
	Tany	N3	M0	3B
Metastatic	Tany	Nany	M1	4