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Representative endoscopic image (A), confocal fluorescence images (B, D) and histologic images (C) of samples diagnosed as HGD with intact mucosal surface are shown. Relevant features such nuclei and incomplete glands are indicated. There is no apparent lesion or ulceration indicating neoplasia in endoscopy image; however, biopsy-confirmed neoplasia is present and neoplastic features are visible in the confocal image.
