[Morphological observation of keratinizing lesion in the oral mucosa].

TL;DRAbstract

The purpose of this study is to examine the ultrastructure of leukoplakia and lichen planus. The light and examine electron-microscopical observations were made in the specimens of leukoplakia and lichen planus as dyskeratosis in oral mucosa which were diagnosed as benign lesions clinically and histopathologically. The results were as follows: 1. Light microscopical findings: Leukoplakia exhibited orthokeratinization and the thickening of prickle and corneal cell layers was seen. The clear and unclear granular layers were seen. Lichen planus was classified as the type of parakeratinizing region or the mixed type of orthokeratinizing and parakeratinizing region, but the former was more abundant. The thickened prickle and corneal cell layers were seen and the granular layer was unclear in the parakeratinized cell regions. Various cells were observed in expanded intercellular spaces of basal cell and prickle cell layers. The infiltration of inflammatory cells in the lamina propria was mor

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