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Where on the body does a primary syphilis chancre usually appear?
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syphilis
Scanning electron micrograph of Treponema pallidum, the spirochete bacterium that is the causative agent of syphilis.
A primary syphilis chancre typically appears at the site of inoculation, which is most commonly the genital organs.12
Specifically, the lesion usually develops on the:
* Penis1
* Labia1
* Cervix1
* Anorectal region1
While these are the most frequent locations, a chancre can also occur at extragenital sites, most notably on the lips or tongue. Because chancres in women often occur internally, they may sometimes go unnoticed.12