What are some common etiologies associated with an increase in hepatic attenuation?
Iron deposition ( haemosiderosis, haemochromatosis ), copper deposition ( Wilson disease ), glycogen storage diseases, medications/drugs ( amiodarone hepatotoxicity ), previous Thorotrast administration.
What is the average unenhanced attenuation of the liver expressed in Hounsfield Units (HU)?
Around 55 HU.
Diffusely increased hepatic attenuation (average density=90 HU) compared to the normal baseline attenuation values of the spleen.