Chancro sifilítico en el labio: una localización poco frecuente

Syphilitic Chancre of the Lip

Syphilis is a sexually transmitted disease caused by Treponema pallidum. The primary stage of the disease (the chancre) mainly involves the genital areas. Extragenital areas are involved in 5%-14% of cases, many of which occur in the oral cavity. Among the extragenital locations, the lip is the most frequent; however, despite this, published cases of the chancre of the lip are few. We present a case of a chancre presenting on the lip of a nonimmunocompromised 55-year-old male patient with immunohistochemical confirmation.

Primary syphilitic chancre on the upper arm in an HIV-1-infected patient

A 32-year-old HIV-infected man presented with an ulcerating skin lesion with indurated borders on the upper right arm. Both dark-field microscopy and syphilis serology confirmed the diagnosis of primary syphilis. Extragenital syphilitic chancres are uncommon but nevertheless have to be kept in mind as they often delay diagnosis.