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This image depicts a close view of a patient’s anus and perineum, revealing the presence of what proved to be a primary anal syphilitic chancre, which manifested due to a primary staged syphilitic infection, caused by the bacterium, Treponema pallidum. Primary syphilis usually presents itself as a genital ulcer, or chancre that is usually firm, round, small and painless, and appears at the spot where T. pallidum bacteria entered the recipient’s body. However, when anal intercourse is the mode of transmission, as was the case here, the site of inoculation can then be the anorectal region, hence, the reason for the anorectal location of the primary syphilitic chancre.
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Content Providers(s):CDC/ Susan Lindsley
Creation Date:1977
Photo Credit:
CDC Organization
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Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.