Liver and intrahepatic bile ducts - nontumor
Hepatitis (acute and chronic)
Prolonged resolving acute hepatitis

Author: Abul Ala Syed Rifat Mannan, M.D. (see Authors page)
Editor: Songyang Yuan, M.D., Ph.D.

Revised: 31 October 2017, last major update March 2015

Copyright: (c) 2002-2017,, Inc.

PubMed Search: Prolonged resolving acute hepatitis

Cite this page: Mannan, A.A.S.R. Prolonged resolving acute hepatitis. website. Accessed July 21st, 2018.
Definition / general
  • Acute hepatitis: hepatic inflammation that lasts less than six months
  • Associated with disease ranging from subclinical to self limited symptomatic to fulminant hepatic failure
  • Usually is self limited with recovery within 1 - 2 months from onset of symptoms but in "prolonged resolving" cases, lasts > 6 months and regresses slowly thereafter
Microscopic (histologic) description
  • Necrosis subsides and phagocytic activity predominates during regression
  • Mild portal inflammation is present and clumps of Kupffer cells are often seen
  • Ductular reaction is seen in severe cases
  • Cholestasis may persist after inflammation and necrosis have subsided
  • There are no dense bundles of collagen and elastic fibers
Microscopic (histologic) images

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Resolving hepatitis

Differential diagnosis
  • Chronic hepatitis
    • Portal inflammation is prominent
    • Dense bundles of collagen and elastic fibers are present
    • Phagocytic activity and clumps of Kupffer cells are usually NOT seen