Histopathological Spectrum of Oral Leukoplakia and Its Malignant Trans formation Risk

Abstract

Background:Oral leukoplakia is one of the most common potentially malignant oral  disorders, with a variable risk of transformation into oral squamous cell carcinoma.  Histopathological evaluation plays a vital role in assessing the severity of epithelial dysplasia  and predicting malignant potential. Aim:To evaluate the histopathological spectrum of oral leukoplakia and assess its risk of  malignant transformation based on clinicopathological findings. Materials and Methods:The present retrospective observational study included 60  histopathologically confirmed cases of oral leukoplakia. Clinical details, including age,  gender, lesion site, clinical appearance, and associated habits, were collected from patient  records. Histopathological examination was performed on hematoxylin- and eosin-stained  sections, and lesions were categorised by the degree of epithelial dysplasia. The correlation  between clinical presentation and the risk of malignant transformation was analysed. Results:The majority of cases were observed among males aged 41–60. Buccal mucosa was  the most commonly affected site. Homogeneous leukoplakia was more prevalent; however,  non-homogeneous lesions were more strongly associated with moderate and severe  dysplasia. Histopathological analysis revealed mild epithelial dysplasia as the most common  finding, whereas severe dysplasia and carcinoma in situ were associated with an increased  risk of malignant transformation. Conclusion:The study highlights that oral leukoplakia exhibits a broad histopathological  spectrum with variable malignant potential. Non-homogeneous lesions and higher grades of  epithelial dysplasia were strongly associated with increased risk of malignant transformation.  Therefore, early diagnosis, histopathological assessment, habit cessation, and long-term  follow-up are essential for the prevention of progression to oral cancer. Advancement of Knowledge:The present study provides a  detailed evaluation of the histopathological spectrum of oral  leukoplakia and its association with the risk of malignant  transformation. The study emphasises the importance of  correlating clinical presentation with histopathological  grading to enable early identification of high-risk lesions.  It further highlights the significance of non-homogeneous  leukoplakia and advanced epithelial dysplasia as important  predictors of malignant progression. The findings contribute  to a better understanding of disease behaviour and support  the need for regular monitoring and timely intervention in  patients with oral leukoplakia.