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Characteristics of dysplasia. (a) Benign mucosa (left), high-grade dysplasia (center), and squamous cell carcinoma (right) on the surface of the tonsil. (b) Dysplasia of the larynx (top) and floor of mouth (bottom) with corresponding histopathology (H&E original magnification 100x). Note enlarged and crowded nuclei with loss of normal cellular architecture.
