Published online Apr 27, 2022. doi: 10.4254/wjh.v14.i4.744
Peer-review started: May 10, 2021
First decision: July 6, 2021
Revised: July 14, 2021
Accepted: March 16, 2022
Article in press: March 16, 2022
Published online: April 27, 2022
Processing time: 347 Days and 5.7 Hours
Non-alcoholic fatty liver disease (NAFLD) is a spectrum of disease ranging from simple steatosis to non-alcoholic steatohepatitis (NASH), through to advanced fibrosis and cirrhosis. Many patients with NAFLD remain undiagnosed and recognizing those at risk is very crucial. Although liver biopsy is the gold standard method for diagnosing and staging NAFLD, non-invasive imaging and lab modalities are also very promising in diagnosing these diseases.
The main motivation for this research was to objectively assess existing non-invasive modalities alone or in combination and determine whether they could accurately help in diagnosing and staging liver disease, foregoing the need for invasive diagnostics such as liver biopsy.
The objective of this research was to combine clinical, lab, and imaging data and assess their ability to accurately diagnose and stage NAFLD without invasive diagnostics such as liver biopsy.
This study was conducted on NAFLD/NASH patients (n = 73) who underwent Fibroscan examinations at Saint George Hospital University Medical Center over 17 mo in order to assess liver fibrosis. Obtained Fibroscan results were correlated to laboratory tests and calculated aspartate transaminase (AST)/alanine transaminase (ALT) ratio, AST platelet ratio index (APRI) score and Fibrosis-4 score.
A significant age difference was observed across fibrosis stages of investigated patients. The mean stiffness score was 9.48 ± 11.77 KPa. A significant positive correlation was found between Bilirubin, PT INR, partial thromboplastin time, glucose, and platelet count when compared across fibrosis stages, in addition to AST/ALT ratio, APRI, and Fib-4 scores.
We conclude that ultrasound alone is not efficient in the assessment of the advancement of liver disease. Furthermore, the high positive relation between AST/ALT ratio, APRI and Fib-4 scores with fibrosis stages in NAFLD patients suggests that they could be used clinically in combination with Fibroscan to predict significant fibrosis and cirrhosis and to avoid liver biopsy.
More research and data is required to make better recommendations. As more and more fields of clinical medicine forego invasive diagnostics in favor of their non-invasive counterparts, the data for such a shift in the diagnosis and staging of NAFLD is encouraging.