PMC7299881_01
Lesions involving: (A) Right buccal mucosa; (B) Left buccal mucosa; (C) Upper labial mucosa; (D-F) 3 months post treatment showing significant reduction of lesions
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F1
On examination of the oral cavity, there were multiple diffuse grayish white raised linear lesions seen on the right and left buccal mucosa, which extended to upper labial mucosa (Figs 1A to C). At 3-month review post treatment, the patient had complete relief from burning sensation, and there was significant reduction in size of the lesions (Figs 1D to F).
Histopathologic sections at 10x and 40x magnification: (A) 10x shows parakeratinized squamous epithelium with features of basal cell degeneration and juxtaepithelial intense chronic inflammatory cell infiltration. The epithelium shows the presence of apoptotic bodies and characteristic saw tooth rete pegs; (B) 40x shows severe degeneration of basal cell layer with lymphocytic infiltration
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F2
The underlying connective tissue showed juxtaepithelial inflammatory infiltrate, which confirmed the diagnosis of OLP (Fig. 2).