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Endoscopic Ultrasound Guided Liver Palpation As a Screening Tool for Advanced Fibrosis and Cirrhosis in Patients with Suspected Metabolic Dysfunction-Associated Steatotic Liver Disease: A Pilot Study.
Gastrointestinal Endoscopy 2024 Februrary 30
BACKGROUND AND AIMS: Endoscopic liver "palpation" can be performed by indenting the liver surface under endoscopic ultrasound (EUS). Indentation depth is measured with sonographic calipers. We hypothesize that fibrotic livers are more difficult to indent, and indentation can accurately predict liver fibrosis staging. We compared EUS-guided liver palpation to conventional screening modalities in patients with suspected metabolic dysfunction-associated steatotic liver disease (MASLD).
METHODS: This was a cross-sectional pilot study. Consecutive patients at three hospitals between 2021-2023 underwent EUS-guided palpation with liver biopsy. Liver palpation was compared to Fibrosis-4 index (FIB-4), AST to Platelet Ratio Index (APRI), NAFLD Fibrosis Score (NFS), and transient elastography in predicting fibrosis staging on histology. Area under the receiver operator characteristic (AUROC) curve analysis was performed.
RESULTS: 73 patients were included. Mean age was 49.1 and 71.2% were female. Mean body mass index was 41.1. Indentation depth was negatively correlated with fibrosis stage (Kruskal-Willis test, p<0.0001). EUS palpation demonstrated c-statistic of 0.79 and 0.95 discriminating advanced fibrosis and cirrhosis respectively. EUS-liver palpation was superior to NFS in predicting advanced fibrosis (p=0.0057) and superior to APRI and NFS predicting cirrhosis (p=0.0099 and 0.045 respectively). EUS palpation was not significantly different versus FIB-4. EUS palpation was superior to transient elastography in predicting cirrhosis (p=0.045). Using optimal cut-offs, indentation measurement ≤3.5mm yielded 100% predictive value ruling in advanced fibrosis, and ≥4.0mm yielded 100% predictive value ruling out cirrhosis.
CONCLUSIONS: EUS liver palpation is a novel, accurate, and easy-to-use screening tool for advanced fibrosis and cirrhosis in patients with MASLD.
METHODS: This was a cross-sectional pilot study. Consecutive patients at three hospitals between 2021-2023 underwent EUS-guided palpation with liver biopsy. Liver palpation was compared to Fibrosis-4 index (FIB-4), AST to Platelet Ratio Index (APRI), NAFLD Fibrosis Score (NFS), and transient elastography in predicting fibrosis staging on histology. Area under the receiver operator characteristic (AUROC) curve analysis was performed.
RESULTS: 73 patients were included. Mean age was 49.1 and 71.2% were female. Mean body mass index was 41.1. Indentation depth was negatively correlated with fibrosis stage (Kruskal-Willis test, p<0.0001). EUS palpation demonstrated c-statistic of 0.79 and 0.95 discriminating advanced fibrosis and cirrhosis respectively. EUS-liver palpation was superior to NFS in predicting advanced fibrosis (p=0.0057) and superior to APRI and NFS predicting cirrhosis (p=0.0099 and 0.045 respectively). EUS palpation was not significantly different versus FIB-4. EUS palpation was superior to transient elastography in predicting cirrhosis (p=0.045). Using optimal cut-offs, indentation measurement ≤3.5mm yielded 100% predictive value ruling in advanced fibrosis, and ≥4.0mm yielded 100% predictive value ruling out cirrhosis.
CONCLUSIONS: EUS liver palpation is a novel, accurate, and easy-to-use screening tool for advanced fibrosis and cirrhosis in patients with MASLD.
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