Seronegative Autoimmune Hepatitis A Clinically Challenging Difficult Diagnosis

Area of Science:

• Hepatology
• Immunology
• Internal Medicine

Background:

• Autoimmune hepatitis (AIH) is an immune-mediated liver disease with diverse clinical presentations and unknown etiology.
• Seronegative AIH, lacking specific autoantibodies, presents diagnostic challenges and can progress to liver failure if untreated.
• Current diagnostic criteria include the complex Revised Diagnostic Criteria (RDC) and the simpler Simplified Diagnostic Criteria (SDC).

Observation:

• A case of seronegative autoimmune hepatitis is presented, diagnosed using the RDC.
• The Simplified Diagnostic Criteria (SDC) score in this case was 4, which was insufficient for a definitive AIH diagnosis.
• The Revised Diagnostic Criteria (RDC) were essential for confirming the diagnosis of seronegative autoimmune hepatitis.

Findings:

• The Simplified Diagnostic Criteria (SDC) may not be effective for diagnosing seronegative autoimmune hepatitis.
• The Revised Diagnostic Criteria (RDC) are crucial for definitive diagnosis in cases of seronegative AIH.
• Patients previously diagnosed with cryptogenic active hepatitis may have had undiagnosed seronegative AIH.

Implications:

• Rethinking the diagnostic approach for seronegative autoimmune hepatitis is necessary.
• The RDC should be considered for patients with suspected seronegative AIH, especially when SDC is inconclusive.
• Improved diagnostic strategies can prevent delayed treatment and adverse outcomes in seronegative AIH patients.