PMC9425175_01
Asymptomatic ulcerated lesions in the tongue.
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PMC9425175_01_gr1.jpg
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A 35-year-old man presented with a 3-week history of asymptomatic ulcerated lesions in the tongue (Fig. 1).
Positive immunohistochemistry for Treponema pallidum.
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PMC9425175_01_gr2.jpg
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Treponema pallidum (Fig. 2).