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Histopathology. 2012 Aug;61(2):141-52. doi: 10.1111/j.1365-2559.2011.04145.x. Epub 2012 Feb 28.

The epidemiology, pathogenesis and histopathology of fatty liver disease.

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Department of Histopathology, Imperial College Faculty of Medicine at St Mary's Hospital, London, UK.


Fatty liver disease includes non-alcoholic fatty liver disease (NAFLD) and alcoholic liver disease (ALD), each of which is increasing in prevalence. Each represents a histological spectrum that extends from isolated steatosis to steatohepatitis and cirrhosis. NAFLD is associated with obesity, diabetes, and insulin resistance, and is considered to be the liver manifestation of the metabolic syndrome. The pathogenesis of NAFLD and ALD involves cytokines, adipokines, oxidative stress, and apoptosis. Histopathology is the gold standard for assessing the severity of liver damage in NAFLD and ALD. We have reviewed the literature, and described and compared the epidemiology, natural disease history, pathogenesis and histopathology of NAFLD and ALD.

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