Figure 7.
A 37-year-old female with a liver lesion found incidentally. (A) A B-mode ultrasound image revealed two nodules; one with a hypoechoic center, hyperechoic rim, and posterior enhancement (solid arrow), and an ill-defined, hyperechoic nodule (open arrow). (B-G) During the arterial phase of the contrast-enhanced ultrasound exam, (B) the first nodule displayed rapid peripheral enhancement that gradually expanded in a discontinuous pattern (solid arrow). (F) The second nodule exhibited slow, gradual growth with centrifugal enhancement (open arrow). During the Kupffer phase (H), the first nodule showed mild washout (solid arrow), which is indicative of a typical hepatic hemangioma. The second nodule appeared isoechoic on the Kupffer phase image (open arrow), suggesting a benign lesion, such as atypical focal nodular hyperplasia or peliosis hepatis.