The aim of this study was to investigate the characteristics of individuals with intraoral potentially malignant disorders (IOPMD)\nin an oral pathology service in Brazil. Cases were screened based on clinical diagnosis of leukoplakia (LKP), erythroleukoplakia\n(ELKP), and erythroplakia (EP). Clinical data and information regarding associated factors were gathered from biopsy reports.\nHistological diagnoseswere collected fromhistopathological records.Among 208 IOPMDcases, 84.13% involved LKP; 11.1%, ELKP;\nand 4.8%, EP.The most affected sites were the gingiva and buccal mucosa. Histologically, epithelial dysplasia was present in 66.8%\nof the lesions, acanthosis and hyperkeratosis without epithelial dysplasia were present in 27.9%, and squamous cell carcinoma was\npresent in 2.9%.Most patients were males, fair-skinned, withmean age of 53.4 years. Chronic smokers represented 73% of subjects,\nofwhich 30% also consumed alcohol. Smokers and drinkerswere mostly males (
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