Figure 6a.

Definitely benign observation in a 57-year-old woman with chronic HBV infection. (a) Transverse US image shows a solid echogenic 3.2-cm observation (arrows), characterized as a hemangioma at prior MRI. (b–d) Axial T1-weighted arterial phase (b) and delayed phase (c) and axial T2-weighted (d) MR images show discontinuous peripheral nodular enhancement (arrow in b), near-complete enhancement of the observation (arrows in c), and marked T2 hyperintensity (arrows in d), findings that are in keeping with the characterization of hemangioma at MRI. As this was the only observation, the study was assigned a US-1 negative category, and routine 6-month surveillance US was recommended.