PMC9897069_01
Painless single ulcer, with a red base, white edges on the palate (A). Lesions healed in second visit, 14 days later (B).
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Intraoral examination showed irregular painless multiple ulcers on the palate with white margins, and yellow reddish base (Figure 1). The lesions healed on the second visit, 2 weeks later (Figure 1).
PMC9897069_02
White plaque with erythematous area on the palate, buccal mucosa right and left, and tongue (A-E). Fissured on the corners of the lip. Second visit (three weeks), the lesions disappeared (F-J).
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Extra oral examination showed reddish fissure at both corners of the mouth (Figure 2A). Intra-oral examination revealed white plaques and erythematous lesions on the right and left buccal mucosa, palate and the tongue (Figure 2B-E). Three weeks later, on the second visit, all lesions were completely healed (Figure 2F-J).
PMC9897069_03
Greyish white plaques on mandibular anterior gingiva, erosion on lower labial mucosa (A). Erosion on left buccal mucosa (B). Erosion on left buccal mucosa (C). The lesion has improved (7 days) (D-F).
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The anterior mandibular gingiva was edematous and tended to bleed and there was an excruciating grayish-white plaque in the region of teeth 33 to 43 (Figure 3). On the upper anterior gingiva, reddish bands appeared on the attached gingiva of teeth 11 and 21 (Figure 3). After 7 days of therapy, the lesions improved (Figure 3).
PMC9897069_04
Multiple ulcers on soft palate, oropharynx, uvula (A), single ulcer on ventrolateral of the tongue and white corrugated, adherent plaques on left lateral of the tongue (B) two months after first visit, the lesions improved (C and D).
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There were also painful multiple ulcers, white yellowish base, shallow, irregular, confluent, surrounded by halo erythematous on the soft palate extending to the oropharynx and uvula (Figure 4A). It could not be scrapped (Figure 4B).  Two months after therapy, the ulcers disappeared (Figure 4C), and the pain while swallowing has gone. Oral hairy leukoplakia on the lateral of the tongue was also healed (Figure 4D).