Korean J Nephrol.
1999 Nov;18(6):1022-1027.
Two Cases of Acute Interstitial Nephritis Associated with Acute Hepatitis A
Abstract
-
Although acute renal failure is common in patients with fulminant hepatitis, it has been
recognized as a rare complication of non-fulrninant acute hepatitis A. So far about 30
patients have been described in the literature who had acute hepatitis A associated with
acute renal failure. Variable renal biopsy findings have been described in previous reports,
including mostly acute tubular necrosis, mesangial proliferative glomerulonephritis, and
interstitial nephritis. But the exact mechanism by which hepatitis A causes acute renal
damage is still obscure. We describe two cases with acute hepatitis A, proven by IgM
anti-hepatitis A antibodies compli- cated by acute renal failure. One patient required
hemodialysis. Kidney biopsy findings showed interstitial nephritis with no evidence of
glomerular involvement. Our review of these cases and the relevant literature suggests
that there is strong evidence to implicate hepatitis A virus as a cause of acute renal
failure. It remains to be elucidated why the histologic features are variable in the cases
of hepatitis A virus induced acute renal failure and which factors predispose a patients
to have immunologic involvement versus interstitial and tubular involvement.