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KMID : 0882420040670030231
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Korean Journal of Medicine
2004 Volume.67 No. 3 p.231 ~ p.240
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Predictive factors for the diagnosis of nonalcoholic steatohepatitis and the degree of liver fibrosis
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Lee Dong-Seok
Cho Chang-Min
Tak Won-Young
Kweon Young-Oh
Kim Sung-Kook
Choi Yong-Hwan
Kim Se-Hwan
Bae Han-Ik
Park Min-Jae
Chung In-Kwon
Kwon Ki-Tae
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Abstract
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Background: Nonalcoholic steatohepatitis (NASH), which is the most severe form of nonalcoholic fatty liver disease (NAFLD), is a disease of emerging identity and importance with increasing epidemic of obesity in Korea. Since NASH may progress to fibrosis, cirrhosis, and even hepatocellular carcinoma, the identification of patients who may progress from steatosis to NASH is important. The aim of this study was to find clinical factors discriminating NASH from steatosis, and predictive factors for the degree of liver fibrosis in NASH.
Methods: Between January 2000 and August 2003, ultrasono-guided liver biopsies were performed on 50 patients in whom NAFLD was suspected clinically. We analyzed clinical factors, laboratory variables, and histologic findings.
Results: All of liver biopsies showed compatible histologic findings with NAFLD. Steatosis was observed in 10 patients (20%) and NASH in 40 patients (80%). In patients with high body mass index (BMI) (p=0.027), NASH was more frequently observed than steatosis. The diagnostic specificity of NASH was high (90%) in patients with BMI over 27.2. BMI and AST/ALT ratio were significant risk factors for severe liver fibrosis in multivariate analysis (p=0.014 and 0.04, regression coefficient 0.43 and 4.484, respectively).
Conclusion: BMI and AST/ALT ratio correlated the degree of liver fibrosis in NASH. So, high BMI (over 27.2) may discriminate NASH from steatosis, and high BMI and high AST/ALT ratio may be useful as predictive factors for severe liver fibrosis in NASH.
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KEYWORD
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Nonalcoholic fatty liver disease, Nonalcoholic steatohepatitis, Body mass index, Liver, fibrosis, Predictive factor
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