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Background: In the last two decades, the simple low-cost abdominal ultrasound (US) examination for the diagnosis of advanced fibrosis and cirrhosis was displaced by very expensive and not readily available modern imaging systems like magnetic resonance imaging (MRI), computed tomography (CT) scan and transient elastography. The aim of this study is to evaluate and emphasize the potential of US for diagnosis of advanced liver fibrosis and cirrhosis. Methods: US, laboratory tests (blood counts, transaminases, aspartate platelet ratio index [APRI], international normalized ratio [INR], serum albumin and bilirubin) and liver biopsy were performed on 197 patients with chronic liver diseases. Development of liver fibrosis was categorized in six stages, with stages 1–3 considered as mild to moderate and stages 4–6 as advanced fibrosis. Sonographic parameters (interrupted liver surface line, nodularity of liver surface, biconvexity of liver edges, grade of liver angle, caudate lobe diameter, parenchyma echotexture and spleen size) were obtained. All variables were dichotomized into zero and one and compared with respect to the different stages of liver fibrosis. The sensitivity, specificity, and positive and negative predictive values of all variables as well as their summations scores through receiver operating characteristic (ROC) curve analysis were calculated for the correct histologic diagnosis. Results: Totally, 39 cases had severe fibrosis and cirrhosis and 158 had mild to moderate fibrosis. The area under the curve by ROC curve analysis of sonographic variables (surface nodularity, angle of left lobe, echotexture of liver and spleen size) was 85%, that of laboratory data (APRI, serum albumin and INR combined) was 83.8%, that of APRI alone was 81.8% and all combined (sonography and lab data together) was 92.4% for the correct diagnosis. Conclusion: The simple US examination, alone or combined with lab data, is able to diagnose advanced fibrosis and cirrhosis with excellent accuracy, making the use of other modern imaging modalities unnecessary.

archives of iranian medicine

Abdominal Ultrasound Combined with Laboratory Tests as a Reliable, Easily Accessible and Cost-Effective Way of Assessing the Stages of Liver Fibrosis and Cirrhosis