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Oral lesions in betel nut chewers (left to right, beginning with top left): a. Striated leukoplakia with small ulcerations on buccal mucosae; b. Red erythroplakia of buccal mucosae; c. Mixed erythroplakia of buccal mucosae; d. Pedunculated leukoplakia of buccal mucosae; e. Submucous fibrosis with leukoplakia of buccal mucosae
