A hypoechoic mass is tissue in the body that’s more dense or solid than usual. This term is used to describe what is seen on an ultrasound scan. Ultrasound uses sound waves that are absorbed by ...

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 ...