Oncol Lett
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A 60-year-old female was referred to the Toho University Omori Medical Center due to ultrasonography findings revealing a notable hepatic mass. The 44×32 mm isoechoic mass had a high-echo band along the margin in the liver. Contrast-enhanced ultrasonography (CEUS) with Sonazoid detected an enhancement pattern extending from the outer periphery to the inside of the mass in the vascular phase and a pattern similar to that of surrounding hepatic tissue in the post-vascular phase. ⋯ US characteristics of hypervascular HCC include the presence of a halo (hypoechoic band) around the lesion and reduced signal intensity in the post-vascular phase of CEUS. US in the patient revealed a mass with a hyperechoic band and a signal intensity in the post-vascular phase of CEUS that was almost identical to that of the surrounding liver parenchyma. These findings suggest poorly differentiated HCC and indicate that further research on hypervascular HCC is required.