Introduction: Due to the increase in tobacco habits, oral potentially malignant and malignant lesions incidence increases thus increasing the burden of cancer on our nation. Thus the prevalence studies on oral cancers are significant to reveal the health status of that region and thus need of treatment. Premalignant pathologies include all those lesions which are precursors of oral squamous cell carcinoma/oral cancer. This retrospective study was planned to assess the prevalence of potentially malignant and malignant oral lesions in Bikaner India from 2015 to 2016. Material and Methods: Hospital based retrospective study was conducted in Bikaner from2015 to 2016. Data was manually retrieved year wise with reference to age, sex, site involved and histopathological findings in hiv patients. Results: 200 oral biopsies were reviewed. Of these, 130 biopsies were premalignant, 40 were malignant and 30 were others. The buccal mucosa was the most frequently involved site followed by tongue and gingiva in HIV patients. Oral lichen planus constituted the highest number of patients in premalignant group, while in malignant group, squamous cell carcinoma was most prevalent. Conclusion: This study revealed that pre-malignant and malignant oral lesions were widespread in the patients visiting the hospital in North West region of Rajasthan.
Key words: Malignant, Premalignant, Histopathological Features, Tobacco, Prevalence.