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  • Title: Clinical usefulness of controlled attenuation parameter to screen hepatic steatosis for potential donor of living donor liver transplant.
    Author: Hong YM, Yoon KT, Cho M, Chu CW, Rhu JH, Yang KH, Lee JW.
    Journal: Eur J Gastroenterol Hepatol; 2017 Jul; 29(7):805-810. PubMed ID: 28379854.
    Abstract:
    OBJECTIVE: Hepatic steatosis is associated with an increased risk of graft loss. Although the controlled attenuation parameter (CAP), a process based on transient elastography, has been suggested as a noninvasive method of assessing hepatic steatosis, to date, there is no study on the usefulness of CAP as a single screening tool for detecting hepatic steatosis in potential living donor liver. We evaluated the accuracy of CAP for detecting hepatic steatosis in potential liver donors. PATIENTS AND METHODS: All potential donors of living-donor liver transplantation who underwent a CAP assessment and ultrasonography-guided liver biopsy were enrolled. The steatosis grades were as follows: S0 less than 5%; S1, 5-33%; S2, 34-66%; and S3, more than 66%. RESULTS: According to the liver biopsies, 19 (34.5%) patients had S0, 30 (54.5%) patients had S1, and 6 (11.0%) patients had S2. The CAP value was correlated positively with BMI (r=0.242, P=0.01), waist circumference (r=0.268, P=0.006), hip circumference (r=0.334, P=0.001), Magnetic resonance fat signal fraction (r=0.465, P=0.001), and histologic steatosis grade (r=0.542, P=0.001). The area under the receiver operator characteristic curve for the diagnosis of steatosis (≥S2) by CAP was 0.88 (sensitivity 83.3% and specificity 81.6% at a cutoff value of 276 dB/m, P<0.0001). CONCLUSION: This study suggests that CAP, as a simple and noninvasive preoperative assessment for hepatic steatosis, may be sufficient for identifying and thus excluding significant hepatic steatosis (>33%) in potential liver donors.
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