Autoimmune hepatitis: trust in transaminases

Area of Science:

• Pediatric Gastroenterology and Hepatology
• Clinical Immunology
• Diagnostic Laboratory Medicine

Background:

• Liver biochemical tests are vital for diagnosing liver diseases, even in asymptomatic individuals.
• Abnormal aminotransferase levels necessitate careful evaluation to identify underlying conditions.
• Autoimmune hepatitis (AIH) is a rare liver disease characterized by significant clinical variability.

Observation:

• A previously healthy, asymptomatic child presented with incidentally discovered elevated aminotransferases.
• Initial investigations revealed hypergammaglobulinemia with elevated IgG and positive anti-liver cytosol type 1 antibodies.
• Liver biopsy confirmed severe interface hepatitis, indicative of autoimmune hepatitis.

Findings:

• The child was diagnosed with autoimmune hepatitis based on clinical, serological, and histological findings.
• Prompt initiation of immunosuppressive therapy with steroids and azathioprine led to a positive clinical response.
• The case underscores the diagnostic utility of liver function tests in pediatric populations.

Implications:

• Elevated serum aminotransferases in asymptomatic children should be thoroughly investigated.
• Early diagnosis and treatment of autoimmune hepatitis significantly improve patient outcomes.
• Clinical suspicion combined with specific serological markers and liver biopsy is key for managing pediatric autoimmune hepatitis.