Hypoechoic masses tend to be hypovascular ... This patient proved to have diffuse metastatic renal cell carcinoma. Ultrasound of the liver shows a fluid-filled mass with a peripheral thin rim ...

Endoscopic ultrasound examination revealed an approximately 4-cm well-defined hypoechoic homogeneous mass in the head of the pancreas (Figures 4, 5); with adjacent 2-cm well-defined hypoechoic ...

Objective Ultrasound (US) imaging has revealed distinct types of greyscale abnormalities in the patellar and Achilles tendons, including diffusely thickened tendons and tendons containing a hypoechoic ...