Long-term growth of intrahepatic papillary neoplasms: A case report

Figure 4 Ultrasonography performed 13 years after the initial clinical visit. Contrast-enhanced ultrasonography shows a 7 mm hyperechoic papillary proliferation (A: Pre-enhancement; B: Arterial phase). Marginal hyperenhancement of the anterior tumor and early enhancement of the papillary proliferation were detected. Marginal enhancement of the posterior tumor (black arrows) was also detected, which suggests tumor spread to the posterior tumor.