The lesional biopsy specimen showed a dense dermal lymphohistiocytic infiltrate with many plasma cells (Figure 2 and Figure 3). A Steiner stain showed thin linear and convoluted forms adjacent to a blood vessel that were consistent with the spirochetes that are seen in syphilis (Figure 4).
An Asymptomatic Penile Plaque With Regional Lymphadenopathy. Arch Dermatol. 1999;135(7):845-b-850. doi:10-1001/pubs.Arch Dermatol.-ISSN-8503-987x-135-7-dof0799