2318 A Rare Case of Cytomegalovirus Hepatitis Complicated by Secondary Syphilis Hepatitis in an Immunocompetent Patient

Abstract

INTRODUCTION: Cytomegalovirus (CMV) hepatitis most commonly presents with subclinical transaminitis and less commonly with the elevation of alkaline phosphatase (ALP) and total bilirubin (TB). Syphilis hepatitis, on the other hand, generally has a non-specific presentation with a more cholestatic picture. We present a rare case of cholestatic hepatitis from acute CMV infection complicated by syphilis hepatitis. CASE DESCRIPTION/METHODS: A 57-year-old homosexual man presented to the emergency room with complaints of intermittent fever and general malaise for the past two weeks. Blood work showed aspartate aminotransferase (AST) of 235 U/L, alanine aminotransferase (ALT) of 284 U/L, ALP of 940 U/L. TB and coagulation profile were normal. Acute hepatitis A, B, C, Epstein-Barr virus, and herpes simplex virus were ruled out. HIV was negative. Workup for autoimmune hepatitis, primary biliary cholangitis, alpha-1-antitrypsin deficiency, and Wilson’s disease was all negative. Abdominal CT scan with contrast was notable for hepatosplenomegaly without liver lesion. CMV IgM was positive with PCR of 7490 copies/mL, indicating acute CMV infection. The patient subsequently improved without treatment. He presented two months later with worsening liver tests with a peaked ALP of 1981 U/L, TB of 1.6 mg/dL, AST 230 U/L, ALT 195 U/L, associated with the macular rash on his trunk, abdomen, both palms, and soles. Abdominal MRI with contrast showed three < 2cm liver lesions. The patient was subsequently diagnosed with secondary syphilis with rapid plasma reagin (RPR) of 1:16 and confirmatory positive fluorescent treponemal antibody absorption (FTA-ABS). Biopsy of the liver lesions showed granulomatous inflammation with negative immunohistochemistry for CMV which was compatible with clinical syphilis hepatitis. The patient was treated with penicillin G. His rash resolved in 2 months with significant improvement of liver tests. The CMV PCR and RPR were negative with normalization of liver enzymes in 4 months. Follow-up MRI showed resolution of the liver lesions. DISCUSSION: Our patient initially had an atypical presentation of acute CMV hepatitis with cholestatic features. He subsequently developed secondary syphilis associated hepatitis with severe intrahepatic cholestasis and liver lesions. This is, to our knowledge, the first case of CMV hepatitis complicated by syphilis hepatitis. Resolving CMV hepatitis with recurrent elevation in liver tests warrant the workup for possible superimposed liver disease.