Table 1. Demographic characteristics of samples .

Study group	No. of cases	Male	Female	Median age (years)	Range of age
Normal tissue	32(12.3%)	9	23	39.6	7-78
Ulcerative/Inflammatory lesion	117(45%)	75	42	38.9	7-80
Squamous cell carcinoma	83(31.9%)	39	44	50.9	31-75
Lymphoma	28(10.7%)	18	10	42.3	34-68
Total	260	141	119	43.18	7-80