Ultrasound of the liver shows a fluid-filled mass with a peripheral thin rim of viable tumor (arrows). This lesion was a necrotic metastasis from colon cancer. The irregular inner wall (open arrow ...

Letter to the Editor on "Strategy for Accurate Diagnosis by Contrast-Enhanced Ultrasound of Focal Liver Lesions in Patients Not at High Risk for Hepatocellular Carcinoma". Multisample Ultrasound ...