Table 4.

The correlation between CRM status and lymph nodes status and extranodal invasion of lymph nodes metastasis

		n	CRM status
			0 mm	0-1 mm	> 1 mm	P value
pN	N0	405	25(6.2%)	109(26.9%)	271(66.9%)	0.005
	N1	238	11 (4.6%)	77 (32.4%)	150 (63.0%)
	N2	140	16 (11.4%)	52 (37.1%)	72 (51.4%)
	N3	55	7 (12.7%)	20 (36.4%)	28 (50.9%)
Extranodal invasion	No	207	11(5.3%)	66(31.9%)	130(62.8%)	0.056
	Yes	226	23(10.2%)	83(36.7%)	120(53.1%)

CRM Circumferential resection margin