Figure 2From: Acute monoarthritis in a delayed diagnosis of syphilis patient with persistent rupioid psoriasis-like lesions Psoriasiform pattern of inflammation and perivascular infiltration containing lymphocytes, monocytes and numerous plasma cells. Haematoxylin and eosin stain: original magnification (panel A)×100 and (panel B) ×400. Spiral and thread-like organisms highlighted by brown chromogen representing spirochetes were observed within the lower layers of the epidermis, and dermo-epidermal junction and upper dermis. Immunohistological stain: original magnification (panel C)×100 and (panel D) ×400.Back to article page