The following table or figure may be downloaded to PowerPoint for personal use in teaching and presentations. This feature is available to all subscribers to the journal.

You MUST read and follow the guidelines at Request to Reproduce AJR Content if you are distributing or using AJR content beyond academic use (limited distribution, non-revenue producing, or educational purposes).

(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.

Fig. 5A —71-year-old man with radiofrequency-treated hepatocellular carcinoma in unenhanced sonography group. After ablation, tumor was enlarged with suspected recurrence. Serum -fetoprotein value was 0.815 ng/mL. Initial biopsy guided by conventional sonography was negative. Contrast-enhanced sonograms obtained after ablation during arterial phase (A) and parenchymal phase (B) show 3.3 x 2.4 cm abnormal enhancement in lesion (arrow). Area of enhancement (arrow, A) in arterial phase washed out quickly in parenchymal phase (arrow, B). However, postablation lesion was not enhanced and presented as hypoechoic during all phases (arrowhead). Area of enhancement was punctured again, and well-differentiated hepatocellular carcinoma was diagnosed.