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. 2015 Jun 18;7(11):1450–1459. doi: 10.4254/wjh.v7.i11.1450

Table 1.

Brunt classification of steatohepatitis[27]

Grades of NASH
Grade 1 (mild) Steatosis up to 66%. Occasional ballooned hepatocytes predominantly in zone 3. Scattered intra-acinar neutrophils
Grade 2 (moderate) Steatosis of any degree. Ballooned hepatocytes predominantly in zone 3. Intra-acinar neutrophils. Zone 3 perisinusoidal fibrosis. Mild to moderate portal and intra-acinar chronic inflammation
Grade 3 (severe) Panacinar steatosis. Widespread ballooned hepatocytes predominantly in zone 3. Intra-acinar inflammation. Scattered neutrophils associated with ballooned hepatocytes. Mild to moderate portal inflammation
Stages of NASH
Stage 1 Extensive zone 3 perisinusoidal fibrosis
Stage 2 Zone 3 perisinusoidal and portal or periportal fibrosis
Stage 3 Bridging fibrosis
Stage 4 Cirrhosis

NASH: Non-alcoholic steatohepatitis.

HHS Vulnerability Disclosure