Semin Liver Dis 2018; 38(01): 014-020
DOI: 10.1055/s-0037-1618587
Review Article
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Can Elastography Differentiate Isolated Fatty Liver from Nonalcoholic Steatohepatitis?

Veeral Ajmera
1   Division of Gastroenterology, NAFLD Research Center, University of California at San Diego, La Jolla, California
,
Rohit Loomba
1   Division of Gastroenterology, NAFLD Research Center, University of California at San Diego, La Jolla, California
› Author Affiliations
Grant Support Dr. Ajmera is supported by the Advanced/Transplant Hepatology Fellowship and the Alan Hofmann Clinical and Translational Research Award from the AASLD Foundation. Dr. Loomba is supported by NIH/R01-DK106419–02.
Further Information

Publication History

Publication Date:
22 February 2018 (online)

Abstract

Ultrasound and magnetic resonance (MR)-based elastography have demonstrated excellent performance for noninvasive staging of fibrosis in patients with nonalcoholic fatty liver disease (NAFLD); however, their ability to differentiate isolated fatty liver from nonalcoholic steatohepatitis (NASH) is unclear. In this review, the authors provide background on elastography and review the ability of elastography to discriminate between isolated steatosis and NASH. Studies with available data on the diagnosis of NASH histology are limited to vibration-controlled transient elastography and MR elastography. A wide range of optimal cutoffs for the diagnosis of NASH are reported and likely depend on the prevalence of advanced fibrosis in the study population. MR elastography has good performance characteristics for identifying patients with any fibrosis who are at greatest risk of disease-related morbidity. Currently, neither modality can reliably discriminate NASH from simple steatosis. Novel multiparametric MR imaging and elastography are emerging and may help detect presence of NASH in the future.

 
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