Table 5.

Comparison of preoperative and postoperative VEGF and IL-2 levels between the two groups.

Group	n	VEGF level (ng/mL)		T value	P value	IL-2 level (ng/mL)		T value	P value
		Preoperative	Postoperative			Preoperative	Postoperative
Study group	45	6.37 ± 1.58	16.91 ± 3.95	16.620	<0.001	1.78 ± 0.45	4.22 ± 1.66	9.517	<0.001
Control group	45	6.74 ± 1.91	14.22 ± 3.72	12.000	<0.001	1.97 ± 0.66	3.66 ± 1.28	7.872	<0.001
T value	–	1.001	3.326	–	–	0.340	1.792	–
P value	–	0.319	0.001	–	–	0.735	0.076	–

Data are presented as mean ± standard deviation.

VEGF, vascular endothelial growth factor; IL-2, interleukin-2.