Figure 16b. Focal steatosis in a 62-year-old woman with previous breast cancer. (a) Baseline US image shows a hyperechoic area within the dorsal aspect of liver segment IV (arrows). Although the appearance and location of the lesion were typical for a focal area of steatosis, the referring clinician requested contrast-enhanced US. (b) Arterial phase US image obtained 40 seconds after contrast material injection demonstrates lesion isoechogenicity.