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Copyright ©The Author(s) 2021.
World J Gastroenterol. Jun 21, 2021; 27(23): 3238-3248
Published online Jun 21, 2021. doi: 10.3748/wjg.v27.i23.3238
Table 3 Nonalcoholic steatohepatitis activity score; steatosis, activity, and fibrosis score; and brunt grading and staging systems
NASH activity score
Steatosis, activity and fibrosis score
Brunt grading and staging
Steatosis grade 0-3Steatosis S0-S3 Grade 1 (Mild)
Lobular inflammation 0-3Activity A1-A3Grade 2 (Moderate)
Ballooning 0-2Lobular inflammation 0-2Grade 3 (Severe)
Fibrosis 0-4 (grade 1 has subgrade A, B, C)Ballooning 0-2Stages fibrosis
Fibrosis F0-F4Stage 1-4