Can Liver Ultrasound Elastography Predict the Risk of Hepatocellular Carcinoma Recurrence After Radiofrequency Ablation? A Systematic Review and Meta-Analysis

Author:

Vestito Amanda1,Dajti Elton12ORCID,Cortellini Fabio12,Montagnani Marco12,Bazzoli Franco12,Zagari Rocco Maurizio21ORCID

Affiliation:

1. Gastroenterology Unit, IRCCS S. Orsola Hospital, Bologna, Italy

2. Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy

Abstract

Abstract Purpose The role of liver stiffness (LS) on ultrasound elastography in the prediction of hepatocellular carcinoma (HCC) recurrence after treatment with radiofrequency ablation (RFA) is still unclear. Our aim was to perform a systematic review and meta-analysis to assess whether LS can predict the recurrence of HCC after RFA. Materials and Methods Medline via PubMed, Embase, Scopus, and Cochrane Library databases, and abstracts of international conference proceedings were searched up to June 30, 2020. Cohort studies were included if they assessed the association between LS values measured by ultrasound elastography before RFA and HCC recurrence. Results 9 studies including 1373 patients with HCC treated by RFA, 643 of whom developed HCC recurrence, were identified. The mean value of LS before RFA was significantly higher in patients who developed HCC recurrence than in those who did not (weighted mean difference=11.98 kPa, 95%CI: 7.60–16.35, I2=63.8%). There was a significant positive association between LS value and HCC recurrence both at univariate (unadjusted HR=1.03, 95%CI: 1.00–1.07, I2=72.7%) and multivariate analysis (adjusted HR=1.03, 95%CI: 1.02–1.04, I2=0). Patients with LS value ≥13–14 kPa or >1.5 m/s have a higher risk of both HCC recurrence (unadjusted HR=2.18, 95%CI: 1.46–3.25, I2=49.7%; adjusted HR=2.41, 95%CI: 1.53–3.79, I2=0) and overall mortality (adjusted HR=4.38; 95%CI: 2.33–8.25, I2=0) in comparison with those with LS below these cutoffs. Conclusion Liver ultrasound elastography appears to be a reliable tool to predict HCC recurrence and overall survival after RFA. This technique may be useful for the management of patients with HCC treated by RFA.

Publisher

Georg Thieme Verlag KG

Subject

Radiology, Nuclear Medicine and imaging

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