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We report a case of early syphilis, presenting as balanitis and papular syphilides in an HIV-infected patient, with a previous history of syphilis infection, which demonstrated a false negative VDRL testing due to a prozone phenomenon. This false negative response results from overwhelming antibody titers, which interfere with the proper formation of the antigen-antibody lattice network, necessary to visualize ...
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Introduction: Malignant melanoma is a very aggressive cutaneous neoplasm, with an increasing incidence in the last years. Material and Methods: A retrospective study was conducted through the analysis of patient’s files diagnosed with cutaneous malignant melanoma between 2011 and 2017. Epidemiological, clinical and histopathological characteristics were analyzed and compared with a previous study from this inst...