**2.4.1 Focal steatosis**

It consists of localized accumulation of fat-rich liver cells. In some cases this accumulation can mimic a liver tumor. Sometimes the opposite phenomenon can be seen, that is an "island" of normal parenchyma in a "shining" liver. In both cases ultrasound examination identifies a well defined, un-encapsulated area, with echostructure and vasculature similar to those of normal liver parenchyma. The lesion can have different forms, most cases being oval and located in the IVth segment, anterior from the hepatic hilum. It occurs in dyslipidemic or alcohol intake patients with normal physical and biological status. Benign diagnosis confirmation is made using CEUS examination which proves a normal circulatory bed similar to adjacent liver parenchyma in all three phases of investigation (Molins et al, 2010).
