Abstract
            
            Nonalcoholic fatty liver disease (NAFLD) is tightly associated with obesity and the
               metabolic syndrome in the United States and other Western countries. It is also the
               liver disease most rapidly increasing in prevalence in the United States, and has
               become a major indication for liver transplantation worldwide. Compelling evidence
               shows that the degree of liver fibrosis dictates liver prognosis in NAFLD. This review
               focuses on fibrosis based on clinical and basic perspectives. The authors summarize
               the physiopathology of fibrosis development and progression in NAFLD, highlighting
               its molecular mechanisms, clinical consequences of fibrosis, the diagnostic approach
               and management strategies.
            
         
         Keywords
nonalcoholic fatty liver disease - fibrosis - prognosis - pathogenesis