Histological Improvement of Hepatic Fibrosis of Decompensated Liver Cirrhosis after Prednisolone and Azathioprine Treatment in a Patient with Autoimmune Hepatitis.

The treatment of the underlying cause of liver disease may potentially reverse hepatic fibrosis. However, it remains uncertain whether improvement in fibrosis can be observed in decompensated liver cirrhosis (LC). Here, we present a case of autoimmune hepatitis (AIH)-related LC in which histological improvement of fibrosis was achieved despite the presence of decompensated LC. A Japanese female in her 20s was initially identified as having liver function impairments during her employment medical checkup. Following a laparoscopic liver biopsy, she was diagnosed with AIH-related decompensated LC (F4 and A3) with a Child-Pugh score of 10. The patient initially received treatment with prednisolone at a daily dose of 40 mg, followed by 20 mg/day of prednisolone plus 25 mg/day of azathioprine (subsequent increase of azathioprine to 100 mg/day). With this treatment, the abnormal serum marker levels returned to normal, thereby enabling the patient to avoid liver transplantation eight months after the initiation of treatment. Moreover, marked improvement was observed in non-invasive tests for hepatic fibrosis, including the FIB-4 index and FibroIndex, as well as liver stiffness evaluated by FibroScan®. Eleven months after diagnosis, the patient developed a cholestatic liver injury and was diagnosed with drug-induced cholestatic liver disease (azathioprine overcapacity as the causative agent). By percutaneous liver biopsy at this point, hepatic fibrosis (F2-3) was markedly improved compared with that at the diagnosis. Along with the improvement of hepatic fibrosis, notable improvements were also observed in patient-reported outcomes such as the SF-36® score and chronic liver disease questionnaire. In this report, we first described a case of AIH that showed a histological improvement of hepatic fibrosis even in decompensated LC by treatment with prednisolone and azathioprine.