Table 2.

Pathological data, complications and mortality rates of the study groups

	Group1(n:97)	Group2(n:119)	P value
T Stage (n,%)			0.229
1  2  3  4	11(11.3) 30(30.9) 49(50.5) 7(7.2)	8(6.7) 33(27.7) 74(62.1) 4(3.3)
N Stage(n,%)			0.001
0  1  2	57(58.7) 29(29.8) 11(11.3)	63(52.9) 19(15.9) 37(31.1)
Perineural invasion (n,%))			0.377
Yes  No	34(35) 63(64.9)	35(29.4) 84(70.5)
Lymphatic invasion (n,%)			0.724
Yes  No	24(24.7) 73(75)	27(22.6) 92(77.3)
Vascular invasion (n,%)			0.546
Yes  No	22(22.6) 75(77.3)	23(19.3) 96(80.6)
Tumor diameter	4.46 ± 2.02	6.32 ± 3.7	0.001
Number of lymph nodes	20.54 ± 8.26	21.51 ± 9.1	0.42
Number of metastaticlymph nodes	1.98 ± 2.57	3.02 ± 3.89	0.026
Postoperative Complication			0.395
No/Minor(n,%))  Major (n,%))	89(91.7) 8(8.2)	105(88.2) 14(11.7)
Mortality	4(4.1)	5(4.2)	-