Table I.

Histopathological characteristics of the patients.

No.	Age, years	Sex	Number of LNM	Grading	Tumor location	Differentiation degree	Distant metastasis
1	63	Female	1	II	Sigmoid colon	Middle-low	M1
2	16	Male	1	IV	Middle segment of transverse colon	Low	M1
3	69	Female	0	II	Rectum	Middle	M0
4	39	Male	0	II	Transverse colon	Middle	M0
5	66	Male	1	III	Junction of rectum and sigmoid colon	Middle	M0
6	43	Female	2	III	Sigmoid colon	Middle	M0
7	60	Male	0	I	Rectum	Middle	M0
8	75	Female	0	II	Ascending colon	Middle	M0
9	67	Female	0	I	Rectum	Middle	M0
10	63	Female	0	II	Transverse colon (proximal to hepatic curvature)	Middle	M0
11	48	Female	0	I	Rectum	Middle	M0
12	54	Male	2	III	Sigmoid colon	Middle	M0
13	54	Female	1	III	Colon	Middle	M0
14	51	Male	2	IV	Sigmoid colon	Middle-low	M1
15	66	Female	0	IV	Ileocecal junction	Middle-low	M1
16	55	Male	1	III	Rectum	Middle	M0

LNM, lymph node metastasis (32); M0, no distant metastasis; M1, have distant metastasis.