Sa1007 The Role of Dynamic Contrast Enhanced Ultrasound in Focal Liver Lesion Characterization: Preliminary Results

Abstract

Background: Recent publications have shown that performing fibroscan of the spleen (fibrospleen) can predict the development of esophageal varices in patients with cirrhosis of the liver. The aim of the present study was to evaluate the fibrospleen as a diagnostic tool in a broader cohort of patients with liver diseases with and without cirrhosis. Methods: 182 consecutive patients [80 female and 102 male, median age 51.8 years] who underwent a fibroscan test at the University Hospital of Essen, Germany, from September 1st to October 10th received a fibroscan of the spleen after obtaining informed consent. The test was performed using Fibroscan touch™ (Echosens™, France). 46 patients were liver transplant recipients, 57 had a viral hepatitis, 28 an autoimmune and 26 a fatty liver disease, further 19 patients suffered from vascular or genetic liver diseases. The patients were further divided in 3 groups regarding their fibroscan of the liver ( 14 kPa n=63). The fibrospleen was correlated to the flow velocity of the portal vein and spleen size. Statistical analyses were performed using GraphPad Prism v 6.0. Results: In a total of 108 patients a valid fibrospleen was possible. The fibrospleen resulted in generally higher values than the fibroscan of the liver. Between the three groups the mean value increased from 28.8 to 33.4 to 52.2 kPa, respectively. The ratio between fibroscan of the liver and fibrospleen increased from 0.33 to 0.44 to 1.15 between the three groups. These differences were statistically significant. The fibrospleen correlated significantly with fibroscan of the liver (pearson coefficient 0.49; p=0.0001) and the size of the spleen (pearson coefficient 0.57; p<0.0001). There was no correlation to the portal flow velocity. The strongest correlation was seen in patients with viral hepatitis, the weakest correlation was seen in patients with a fibroscan of the liver between 7-14 kPa. Conclusion: The fibrospleen shows a linear correlation to liver stiffness in all stages of liver diseases. It correlates to the size of the spleen and is independent of the portal flow velocity. This suggests that fibrospleen may offer further information in the staging of liver disease and a valuable addition to the fibroscan. Prospective analyses are required to evaluate the potential of the fibrospleen in the diagnosis of liver diseases and its complications.