An aggressive form of chronic hepatitis involving extensive liver damage and cell injury beyond the portal tract.

A mild form of chronic hepatitis causing limited damage to the liver.

INFLAMMATION of the LIVER with ongoing hepatocellular injury for 6 months or more, characterized by NECROSIS of HEPATOCYTES and inflammatory cell (LEUKOCYTES) infiltration. Chronic hepatitis can be caused by viruses, medications, autoimmune diseases, and other unknown factors.

Synonyms: Hepatitis, Cryptogenic Chronic, Hepatitis, Chronic, Cryptogenic Chronic Hepatitis, Chronic Persistent Hepatitides, Chronic Persistent Hepatitis, Hepatitis, Chronic Persistent, Chronic Hepatitis, Hepatitis, Chronic, Cryptogenic, Hepatitis, Chronic Active, Chronic Hepatitis, Cryptogenic, Chronic Active Hepatitis