PMC6854949_01
Linear, plaque-like whitish lesion on the palatal and buccal gingiva of 13, 14, and 15.
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Intraoral examination revealed a linear, plaque-like whitish lesion on the palatal and buccal free gingiva of 13, 14, and 15 (Figure 1).
IOPA radiograph of 13-15 region.
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She had no other significant extraoral or intraoral findings, and the radiological examination in relation to the site was normal (Figure 2).
Keratosis with mild epithelial dysplasia under H&E staining.
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Koilocytic cells under x40 magnification.
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Immunohistochemical assay with p16 showing positive staining in >50% of the cells with >25% cell confluency.
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Furthermore, due to the presence of koilocytosis, immunohistochemical evaluation was carried out with p16 antibody which clearly revealed positivity in >50% of the cells with >25% confluency (Figure 5).