Fatty liver with focal sparing
Fatty liver disease with focal infiltration
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Axial C+ portal venous phase
This case shows a fatty liver with focal sparing.
Fatty liver can be diagnosed on unenhanced CT if the attenuation of the liver is at least 10 HU less than that of the spleen or if the attenuation of the liver is less than 40 HU. Fatty liver can be diagnosed at contrast-enhanced CT if absolute attenuation is less than 40 HU, but this threshold has limited sensitivity1.