Table 2.

Expression of MMP-2 and MMP-9 in the main tumor mass and on the resection margin.

	N	Average	P
MMP-2
Tumor	95	98.9160	0.0301
Margin	43	109.0237
Tumor mass, positive surgical margin	43	91.3581	0.1833
Tumor mass, negative surgical margin	52	105.1658
MMP-9
Tumor	106	142.1780	0.1214
Margin	45	171.0924
Tumor mass, positive surgical margin	45	157.2962	0.0121
Tumor mass, negative surgical margin	61	131.0252