Table 3 : Recurrence rate according to analyzed risk factors.

	Relapse	No relapse	P
Depth of stromal invasion (mm)
≤1	0/4	40/51 (78%)	NS
1-3	3/4 (75%)	11/51 (21%)	<0.04
Positive resection margins	1/4 (25%)	30/51 (59%)	NS
Positive LVSI*	0/4	2/51 (4%)	NS
Demographical risks†	2/4 (50%)	9/51 (18%)	NS
Previous HPV	1/4 (25%)	13/51 (25%)	NS

*Limph-Vascular space infiltration
^†such as age, diabetes, sieropositivity for HIV, HCV or HBV, autoimmune diseases, smoking, past or actual chemioterapy treatment.