10. Anatomical staging/prognosis group.

Stage	T	N	M
cTNM is the clinical stage, and pTNM is the pathological stage; prefix y is used for tumor stage after neoadjuvant (preoperative) treatment (e.g. ypTNM). The stage for patients with complete pathological response is ypT0N0cM0, which may be similar to stage 0 or 1. The prefixe r is used in patients who relapse after a tumor-free interval gained by treatment (rTNM).
0	Tis	N0	M0
I	T1	N0	M0
	T2	N0	M0
IIA	T3	N0	M0
IIB	T4a	N0	M0
IIC	T4b	N0	M0
IIIA	T1−2	N1/N1c	M0
	T1	N2a	M0
IIIB	T3−4a	N1/N1c	M0
	T2−3	N2a	M0
	T1−2	N2b	M0
IIIC	T4a	N2a	M0
	T3−4a	N2b	M0
	T4b	N1−2	M0
IVA	Any T	Any N	M1a
IVB	Any T	Any N	M1b
IVC	Any T	Any N	M1c