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[Relapsing viral hepatitis type A complicated with renal failure].
Martin Tagle1, Jose A Barriga, Sussy Gutierrez
1Gastroenterólogo-Héatólogo, Clínica Anglo Americana, Lima. Peru.
Summary
This case study details a rare relapsing hepatitis A infection with cholestatic features, complicated by renal failure and vasculitis. Treatment with corticosteroids and cyclophosphamide proved effective for this unusual presentation.
Area of Science:
- Hepatology
- Nephrology
- Immunology
Background:
- Hepatitis A virus (HAV) infection typically follows a benign course, but relapsing forms (3-20%) and extra-hepatic manifestations, though rare, can occur.
- Renal involvement and acute renal failure (ARF) are infrequent complications of non-fulminating hepatitis A, with unclear etiology.
- Thrombotic microangiopathy has been previously associated with Hepatitis B, but its link to relapsing Hepatitis A is not well-documented.
Observation:
- A 42-year-old male presented with relapsing cholestatic hepatitis A, fever, anemia, and acute renal failure requiring hemodialysis.
- Cryoglobulinemia and hypocomplementemia were detected; kidney biopsy revealed thrombotic microangiopathy.
- Skin biopsy showed leukocytoclastic vasculitis, with symptoms improving upon corticosteroid and cyclophosphamide therapy.
Findings:
- The patient exhibited thrombotic microangiopathy, suggesting a link to Hemolytic Uremic Syndrome (HUS).
- This represents the first reported case of relapsing hepatitis A associated with confirmed microangiopathic renal involvement.
- The patient responded well to immunosuppressive therapy, indicating an immune-mediated process.
Implications:
- This case expands the understanding of potential severe complications of hepatitis A, including renal involvement.
- It underscores the importance of considering immune-mediated mechanisms in hepatitis A-associated renal failure.
- Further research is warranted to elucidate the pathophysiology of hepatitis A-related thrombotic microangiopathy and vasculitis.