[Obesity: danger for the hepatocytes?].

Obesity is associated either with hepatic steatosis, a well known and innocuous entity or with non alcoholic steatohepatitis. This latter lesion has been recently individualized. It affects mainly middle-aged, obese women, with diabetes and/or hyperlipidaemia. It is morphologically very similar to alcoholic hepatitis. We review the literature considering 1) histologic hepatic lesions of the obese, 2) epidemiologic, clinical and biological characteristics of the non alcoholic steatohepatitis, 3) evolution and treatment of the non alcoholic steatohepatitis and 4) present physiopathological considerations. We conclude by considering the clinician's attitude in front of an obese potentially afflicted by a non alcoholic steatohepatitis.