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Case 9 Proliferative leukoplakia on a, b the mandibular gingiva, c the hard-palatal mucosa, and d the latero-ventral tongue. e Biopsy of tongue lesion exhibits atypical verrucous hyperplasia (H&E, original magnification ×40). f Minimal cytologic atypia and minimal inflammatory infiltrate present (H&E, original magnification × 400)
