Table 2. Among the affected cases [462], distribution of type of lesions (2).

Types of lesion	Number of cases	Percentage of affected (%)	Chi-square test	P value
Ulcerative lesion	267	57.8	–	–
Ulceroproliferative lesion	115	24.9	90.765	<0.0001
Polypoidal lesion	80	17.3	–	–