Table 3. Frequency of H. pylori detection in different lesions.

Type of Lesion	H. p Positive	H. p Negative	P
Normal tissue	12 4.6%	20 7.6%	All samples (0.000)
Ulcerative/Inflammatory lesions	85 32.6%	32 12.3%	All lesions (0.042)
SCC	69 26.5%	14 5.3%
Lymphoma	17 6.5%	11 4.2%
Total	183 70.4%	77 29.6%