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Photomicrograph of the three different areas. Histology of the normal epithelium showing basal cell hyperplasia with no atypia (A). The base of the tumor ulcer consisted of a poorly differentiated squamous cell carcinoma (B). The tumor adjacent dysplastic epithelium (TADE) that showed loss of fluorescence with the VELscope® showed the presence of moderate epithelial dysplasia (C). Original magnification X200.
