Aims. Nonalcoholic fatty liver disease (NAFLD) is associated with components of the metabolic syndrome (MS) but the prevalence of NAFLD in the Czech Republic is unknown. The aim of this study was to assess the latter in patients with type 2 diabetes (DM2) and to compare the noninvasive fibrosis scores with ultrasound findings in those patients. Methods. 180 consecutive patients with DM2 (mean age 64.2±9.3 years, 63% men) were examined for liver biochemistry, MS parameters and had liver

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... d. MS was diagnosed according to the International Diabetes Federation. The diagnosis of NAFLD was based on liver ultrasound. Other aetiology of liver lesion was ruled out. Additionally, AST/ALT ratio, APRI, NAFLD fibrosis score, FIB4 and BARD scores were calculated. Results. 93% of patients met the MS criteria, 79% had NAFLD and 13% had ultrasound signs of fibrosis/cirrhosis. NAFLD patients had greater weight (96.9±19.3 vs 84.7±14.7 kg; P=0.003), BMI (32.6±5.2 vs 29.4±5.4 kg/m 2 ; P=0.007), waist circumference (113.8±12.8 vs 107.1±10.3 cm; P=0.033), ALT (0.73±0.57 vs 0.55±0.53 μkat/L, P=0.007) and triglyceridaemia (1.9±1.4 vs 1.4±1 mmol/L; P=0.005) than patients without NAFLD. There were no significant differences in age, sex, cholesterol, fasting glycaemia or glycated haemoglobin. Of calculated scores only the NAFLD fibrosis score revealed significant differences between patients with and without ultrasound signs of fibrosis/cirrhosis (1.027±2.228 vs -0.118±1.402, P=0.026). Conclusion. Patients with DM2 had in the majority of cases NAFLD which was related to weight, BMI, waist circumference and serum triglycerides. The validity of the liver fibrosis scoring system has to be assessed in those patients in the future.