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A prospective comparative assessment of the accuracy of the FibroScan in evaluating liver steatosis.

A prospective comparative assessment of the accuracy of the FibroScan in evaluating liver steatosis.
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Jun BG, Park WY, Park EJ, Jang JY, Jeong SW, Lee SH, Kim SG, Cha SW, Kim YS, Cho YD, Kim HS, Kim BS, Jin SY, Park S,


Jun BG, Park WY, Park EJ, Jang JY, Jeong SW, Lee SH, Kim SG, Cha SW, Kim YS, Cho YD, Kim HS, Kim BS, Jin SY, Park S, (click to view)

Jun BG, Park WY, Park EJ, Jang JY, Jeong SW, Lee SH, Kim SG, Cha SW, Kim YS, Cho YD, Kim HS, Kim BS, Jin SY, Park S,

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PloS one 2017 08 1512(8) e0182784 doi 10.1371/journal.pone.0182784
Abstract
BACKGROUND/AIMS
Recent studies have demonstrated the utility of the FibroScan® device in diagnosing liver steatosis, but its usefulness has not been thoroughly appraised. We investigated the usefulness of the controlled attenuation parameter (CAP) in detecting and quantifying liver steatosis.

METHODS
A prospective analysis was applied to 79 chronic liver disease patients who underwent a liver biopsy, a FibroScan investigation, ultrasonography, and hepatic steatosis index (HSI). The presence and degree of steatosis as measured by the FibroScan device, ultrasonography and HSI were compared with the results for the liver biopsy tissue.

RESULTS
There was substantial concordance between the liver biopsy results and the CAP as evaluated by the kappa (κ) index test for detecting liver steatosis (κCAP = 0.77, P<0.001; κultrasonography = 0.60, P<0.001; κHSI = 0.47, P<0.001). The areas under the receiver operating characteristic curve (AUROCs) of the CAP, ultrasonography, and HSI were 0.899 [95% confidence interval (CI) = 0.826-0.972)], 0.859 (95% CI = 0.779-0.939), and 0.766 (95% CI = 0.655-0.877), respectively. The optimal CAP cutoff value for differentiating between normal and hepatic steatosis was 247 dB/m, which produced sensitivity and specificity values of 91.9% and 85.7%, respectively, as well as a positive predictive value of 85.0% and a negative predictive value of 92.3%. CONCLUSION
The CAP produces results that are highly concordant with those of a liver biopsy in detecting steatosis. Therefore, the CAP is a noninvasive and reliable tool for evaluating liver steatosis, even in the early stages.

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