A case of syphilitic hepatitis in an HIV-infected patient.

While the incidence of syphilis has been persistently on the rise in the United States, hepatitis as a complication of early syphilis is relatively uncommon. We present a case of a 51-year-old homosexual, HIV-positive man who presented with acute cholestatic hepatitis with a predominantly elevated alkaline phosphatase. After laboratory studies and imaging were unrevealing, a liver biopsy was performed that showed expanded portal tracts with a predominantly lymphoplasmacytic infiltrate and prominent bile ductular proliferation with periductal neutrophils. Testing revealed a positive rapid plasma reagin, and a subsequent Warthin-Starry stain of the liver tissue demonstrated the presence of scattered spirochetes, confirmed as Treponema pallidum spirochetes on immunohistochemistry testing. These findings confirmed a diagnosis of syphilitic hepatitis. With therapy, symptoms and liver enzymes rapidly normalized. Given the persistent rise in syphilis incidence along with the morbidity and mortality associated with a missed diagnosis, keen suspicion, early identification, and treatment are crucial.