case_images: PMC11288364_01
case_images: Clinical characteristics of Case 1. (A and B) On the first visit, the patient had several multiple yellowish-white ulcers on the lateral border of the tongue and floor of the mouth. (C) An elongated band-shaped erythematous lesion on the upper and lower anterior gingiva. (D-F) The lesions notably improved within a week.
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case_images: Intraoral examination revealed multiple oval-shaped ulcers on the left lateral border of the tongue and floor of the mouth, as well as erythematous lesions on the gingival margins (Figure 1A-C). The lesions improved a week later (Figure 1D-F).
case_images: PMC11288364_02
case_images: Intraoral appearances of the patient in Case 2 (A-C) On the first examination, there was a single erythematous lesion, yellowish-white plaque that could not be scrapped, reddish-yellow single ulcer, and corrugated white plaque that could not be scrapped (D-F) The lesions resolved after 14 days.
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case_images: An intraoral examination revealed erythematous lesions on the lower labial mucosa, a yellowish-white plaque with erythematic areas on various oral surfaces, and a bilateral corrugated white plaque on the lateral tongue (Figure 2A-C). Follow-up visits after 14 days revealed that the oral lesions had completely healed (Figure 2D-F).
case_images: PMC11288364_03
case_images: Intraoral conditions in patient Case 3 (A and B) On the first visit, there were several yellowish ulcers on the right buccal mucosa accompanied by a single yellowish ulcer on the left buccal mucosa (C-D) The improvement condition was observed after 7 days.
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case_images: The intraoral examination discovered multiple yellowish ulcers on both the buccal mucosa and the labial mucosa (Figure 3A and B). Seven days later, oral ulcers had significantly improved (Figure 3C and D).
case_images: PMC11288364_04
case_images: Clinical features of patient Case 4 (A) On the first visit, there was a hemorrhagic crust on the lower lips (B) After five days, the lesion resolved.
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case_images: The patient had anemic conjunctiva and a hemorrhagic crust on the lower lips that bleed and was painful (Figure 4A). The lesions healed in five days (Figure 4B).
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case_images: The extraoral lesions in patient Case 5 (A and B) On the first visit, there was a hemorrhagic crust on the upper and lower lips (C and D) The lesions resolved 15 days later.
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case_images: The extraoral examination revealed anemic conjunctiva and a hemorrhagic crust on the upper and lower lips that tended to bleed (Figure 5A and B). After 15 days, the lesions had healed (Figure 5C and D). 