Comparing F3 and F4 Fibrosis With Allysa Saggese

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MASLD AI 03:58 AM

September 2025

In this session from the MASLD/MASH Community Network, Allysa Saggese, NP from Weill Cornell Medicine in New York, explores the critical differences between F3 and F4 fibrosis through two detailed case studies. Accurate staging is essential in fatty liver disease management, as it directly impacts treatment decisions, eligibility for FDA-approved therapies like resmetirom, and the need for hepatocellular carcinoma (HCC) surveillance. Allysa explains how non-invasive tests such as FIB-4, FibroScan, ELF, CAP, and MRI elastography compare, when to consider a liver biopsy, and how to interpret discordant results. She also discusses treatment pathways, the role of GLP-1 receptor agonists, lifestyle modification, and monitoring strategies for patients with advanced fibrosis versus cirrhosis. This practical overview provides clinicians with a clear framework to distinguish between F3 and F4, ensuring patients receive timely interventions, surveillance, and education to improve long-term outcomes in MASLD/MASH.

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