Acute presentation of autoimmune hepatitis: Does it exist? A published work review

Area of Science:

• Hepatology
• Immunology
• Internal Medicine

Background:

• Autoimmune hepatitis (AIH), a chronic liver disease, is typically characterized by specific histological findings.
• Recent literature highlights acute presentations of AIH, comprising two distinct clinical entities.
• These entities are acute exacerbation of chronic AIH and genuine acute AIH without prior chronic changes.

Purpose of the Study:

• To differentiate between the acute form and acute exacerbation form of autoimmune hepatitis.
• To review the current understanding of acute autoimmune hepatitis presentations.
• To emphasize the importance of early diagnosis and treatment for acute AIH.

Main Methods:

• Review of published clinical studies and case reports on acute autoimmune hepatitis.
• Analysis of histological findings differentiating acute AIH from chronic AIH exacerbations.
• Examination of clinical presentations and diagnostic markers in acute AIH.

Main Results:

• Genuine acute AIH is histologically identified by centrilobular necrosis without chronic changes.
• Standard AIH markers like elevated immunoglobulin G and antinuclear antibodies may be absent in some acute cases.
• Distinguishing the acute form from exacerbations is clinically significant due to differing prognoses.

Conclusions:

• Acute presentation of autoimmune hepatitis requires careful consideration, especially when typical serological markers are absent.
• Histological examination is key to identifying genuine acute AIH.
• Prompt diagnosis and initiation of therapy for acute AIH are vital to prevent poor prognosis.