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A patient who has achieved resolution of acute hepatitis B and acquired anti-HBs would get protective immunity against hepatitis B virus (HBV). However, reactivation of HBV could happen if the patient was exposed to an immunocompromised state by using immunosuppressive drugs or chemotherapeutic agents. That is because cccDNA could reside within hepatocytes after recovery of acute hepatitis B. Therefore, guidelines for hepatitis B recommend the use of prophylactic antiviral agents such as entecavir or tenofovir in patients with anti-HBc IgG. The reactivation of hepatitis B without exposure to an immunocompromised state is very rare and only 1 case has been reported in the world to date. An 82-year-old male patient visited Dankook University Hospital because of high aspartate transaminase, alanine aminotransferase, and total bilirubin. He had shown HBsAg negative/anti-HBs positive when he had blood test examinations 1 year previously. However, the present blood test revealed HBsAg positive/anti-HBs negative and a high titer of HBV DNA (814,815 copies/mL). He had undergone vertebroplasty 5 years previously and had no other medical history. Other blood and radiological examinations failed to show other diseases that could affect host immunity. He started antiviral treatment with entecavir. However, he passed away because of deteriorated hepatic function and hepatorenal syndrome 20 days after admission. It is very rare that a patient with anti-HBs would develop hepatic failure and pass away without trigger factors. Here, we report the case with a literature review.

Hepatic Failure by Spontaneous Reactivation of Hepatitis B Virus without a Trigger Factor in a Patient with Anti-HBs