Hepatic Lesions with Secondary Syphilis in an HIV-Infected Patient

Figure 3

Histological findings: (a) IHC, 40X: scanning power view of liver core biopsy immunohistochemically stained for Treponema pallidum. Organisms are visible as red color and correspond to the fibrotic inflamed area seen on hematoxylin and eosin stain (H&E). T. pallidum, 40X. (b) IHC, 200X: intermediate power view shows spirochetes centered around blood vessels and infiltrating into sclerotic hepatic parenchyma. T. pallidum, 200X. (c) IHC, 600X: high power magnification of spirochete highlights the spiral morphology. T. pallidum, (black arrow) 600X.

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