Abstract:

  Background and Aim: : Diverse prevalence of oral mucosal lesions has been reported among different populations. There are few researches about the prevalence of oral mucosal lesions in Iran. The aim of the current study was to investigate the prevalence of oral mucosal lesions and associated factors in pathology department of Tehran Cancer Institute of Imam Khomeini Hospital from 2000 to 2010.

  Materials and Methods : This research was conducted on existing data. The patients’ age, gender, site of the lesion, type of the lesion and microscopic diagnosis were recorded. Prevalence of lesions were evaluated with (CI=%95) all data were analyzed by x² Test under spss (16).

  Results: Oral mucosal lesions were present in 784 cases out of 40092 cases (1.96%). Epithelial lesions were found to be the most prevalent oral mucosal lesions of all (90%). The most common location reported for the lesions was the lips (26.8%).The mean age for the patients was 43±17 years of age and there was no association found between the type of the lesion and the sex of the subjects (p<0.09).

  Conclusion: Squamous Cell Carcinoma was the most prevalent mucosal lesion which is a malignant epithelial tumor and its early detection is essential.