Incidental hyperechoic lesion on ultrasound.
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Sharply delineated round lesion neighbouring the gallbladder with signal loss on spectral fat sat and opposed-phase chemical shift images. Moderate enhancement after contrast (from 200 to 300 arbitrary units).
In a lesion with predominant fat content, the diagnosis can be made with a relatively high degree of certainty. However, fat inclusions have also been described in hepatocellular carcinomas.