CID, ISM / SCIENCE PHOTO LIBRARY CID, ISM / SCIENCE PHOTO LIBRARY
Tertiary syphilis around the mouth in an adult patient. Syphilis is caused by the Treponema pallidum bacterium transmitted through sexual intercourse with an infected person. Tertiary syphilis occurs within 10 years of infection, with the formation of tumour-like gummas, as seen here, which also cause neurological disorders.
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