Single Nucleotide Polymorphism in SMAD7 and CHI3L1 and Colorectal Cancer Risk

Table 3

Staging and survival of CRC.

Dukes’ staging	TNM staging	Description	Survival (%)
	Stage 0	Carcinoma in situ
A	Stage I	No nodal involvement, no metastasis, tumor invades submucosa (T1, N0, M0), tumor invades muscularis (T2, N0, M0)	90–100%
B	Stage II	No nodal involvement, no metastasis, tumor invades subserosa (T3, N0, M0), invade other organ (T4, N0, M0)	75–85%
C	Stage III	Regional lymph nodes involved (any T, N1, M0)	30–40%
D	Stage IV	Distant metastasis (any T, any N, M1)	<5%