- Pathogenesis:
- Fat focally accumulates in hepatocytes,
creating low-density regions seen on CT, which mimic a low attenuated
metastasis.
- More commonly found in the left lobe of
the liver and adjacent to the falciform ligament.
- Associated with alcohol abuse (most
common), obesity, steroids, and hyperalimentation.
- Radiographic findings:
- U/S: bandlike geographic areas of
increased echogenicity in a lobar/segmental distribution.
- CT: no mass effect on adjacent vessels,
patchy areas of decreased attenuation.
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