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→Pseudotumors and inflammatory masses of the liver: +Image. Linked to abscess
===Focal steatosis===
[[File:Ultrasonography of focal steatosis.jpg|thumb|This one is is distinguished from a tumor by not compressing the hepatic vein going through it.]]
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
[[File:Contrast-enhanced ultrasound of liver abscess.jpg|thumb|Liver abscess (2D and CEUS). 2D Examination reveals the fluid nature of the mass
and imprecise delineation. CEUS examination shows congestion in the surrounding liver parenchyma and excludes a vascular tumor.]]
{{Main|Ultrasonography of liver abscess}}
Liver abscess have heteromorphic ultrasound appearance, the most typical being that of a
mass with irregular shapes, fringed, with fluid or semifluid content, with or without air inside.Doppler examination shows the lack of vessels within the lesion. CEUS exploration showshyperenhancement during arterial phase close to the lesion, this being suggestive of a liverparenchymal hyperemia. During venous and sinusoidal phase the pattern is hypoechoic, andthe central fluid is contrast enhanced. CEUS examination is useful because it confirms theclinical suspicion of abscess. In addition, it allows for an accurate measurement of thecollection size and an indication regarding its topography inside the liver (lobe, segment).<ref name="BadeaIoanitescu2012"/>
==Preneoplastic status. Cirrhotic liver monitoring==
