Fas ligand expression in colon cancer: A possible mechanism of tumor immune privilege

Table 1 Relationship between FasL expression and clinicopathologic features of colon cancer.

	Group	Cases	Positive	Negative	χ2 value
Macroscopic type	Polypoid	26	15	11	0.349
	Ulcerative	37	24	13
	Infiltrative	27	17	10
Microscopic feature	Well differentiated	9	3	6	3.706
	Moderately differentiated	46	30	16
	Poorly differentiated	22	15	7
	Mucoid adenocarcinoma	13	8	5
Invasion depth	Whole layer	47	34	13	4.492
	Muscular layer	32	17	15
	Mucosa and submucosa	11	5	6
Lymphatic metastasis	Positive	56	43	13	13.375a
	Negative	34	13	21
Dukes’ stage	A	11	5	6	18.187a
	B	23	8	15
	C	31	20	11
	D	25	23	2
Liver metastasis	Positive	23	22	1	14.689a
	Negative	67	34	33

^aP<0.05 vs others.