Non-alcoholic fatty liver disease classification: Difference between revisions

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** Stage: depends on degree of fibrosis
** Stage: depends on degree of fibrosis
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==Histological classification==
==Histopathological classification==
Histological classification of NASH inlcudes Grading and staging.
Histological classification of NASH inlcudes Grading and staging.
===Grading===
===Grading===

Revision as of 17:35, 21 December 2017

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Vamsikrishna Gunnam M.B.B.S [2]

Overview

Non-alcoholic fatty liver disease may be classified based on clinical presentation into non-alcoholic fatty liver and non-alcoholic steatohepatitis.

Classification

Non-alcoholic fatty liver disease may be classified based on clinical presentation into non-alcoholic fatty liver and non-alcoholic steatohepatitis.[1][2][3]

Based on clinical presentation
Non-alcoholic fatty aliver Non-alcoholic steatohepatitis
  • Benign
  • Aggressive
  • Non-progressive
  • Can progress to cirrhosis
  • Rarely can give rise to hepatocellular carcinoma
Based on histopathology
  • Steatosis
  • Steatohepatitis
    • Grade: depends on degree of steatosis and necroinflammatory activity
    • Stage: depends on degree of fibrosis

Histopathological classification

Histological classification of NASH inlcudes Grading and staging.

Grading

NAFLD activity score is employed for grading steatohepatitis of NASH. NAS represents the sum of scores for steatosis, lobular inflammation, and ballooning.[4][5]

Component Range Score
Steatosis <5% 0
5-33% 1
34-66% 2
>66% 3
Lobular Inflammation None 0
<2 focci 1
2-4 2
>4 3
Hepatocyte Balloning None 0
Few ballooned cells 1
Many ballooned cells 2
Interpretation 0-2 Non-diagnostic
3-4 Borderline
5-8 Diagnostic

Staging

Based on the degree of fibrosis on biospy NASH can be classified into 4 stages.

Staging
Stage 1

Zone 3 fibrosis
Perisinusoidal fibrosis
Portal/ periportal fibrosis

Stage 2 Perisinusoidal and portal/periportal fibrosis
Stage 3 Bridging fibrosis
Stage 4 Cirrhosis

References

  1. Hashimoto E, Tokushige K, Ludwig J (2015). "Diagnosis and classification of non-alcoholic fatty liver disease and non-alcoholic steatohepatitis: Current concepts and remaining challenges". Hepatol Res. 45 (1): 20–8. doi:10.1111/hepr.12333. PMID 24661406.
  2. Cobbina E, Akhlaghi F (2017). "Non-alcoholic fatty liver disease (NAFLD) - pathogenesis, classification, and effect on drug metabolizing enzymes and transporters". Drug Metab Rev. 49 (2): 197–211. doi:10.1080/03602532.2017.1293683. PMC 5576152. PMID 28303724.
  3. Monteiro JM, Monteiro GM, Caroli-Bottino A, Pannain VL (2014). "Nonalcoholic fatty liver disease: different classifications concordance and relationship between degrees of morphological features and spectrum of the disease". Anal Cell Pathol (Amst). 2014: 526979. doi:10.1155/2014/526979. PMC 4333905. PMID 25763333.
  4. Vizuete J, Camero A, Malakouti M, Garapati K, Gutierrez J (2017). "Perspectives on Nonalcoholic Fatty Liver Disease: An Overview of Present and Future Therapies". J Clin Transl Hepatol. 5 (1): 67–75. doi:10.14218/JCTH.2016.00061. PMC 5411359. PMID 28507929.
  5. "Transplant Pathology Internet Services".

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