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Fig. 4A Dynamic contrast-enhanced sonographic images of liver of
58-year-old man with well-differentiated hepatocellular carcinoma (diameter,
2.2 cm) in lateral segment of left lobe. Tumor was misdiagnosed as benign when
we evaluated only late phase. Arrows point to margins of tumor (suspected
margins in late phase). Baseline sonographic image shows hypoechoic
hepatocellular carcinoma in lateral segment of left hepatic lobe.