Most fluid-filled cysts, particularly in the breast, will be anechoic on ultrasound (Fig. A). If something is hypoechoic it appears darker than the surrounding tissues. Most solid lesions of the ...

The “Triangle sign” seen on ultrasound is a “distinctive and reliable” ultrasound feature for differentiating total choroidal ...

A simple cyst classically appears as a mass that has well-defined borders. On ultrasound, it is generally anechoic and shows significant posterior acoustic enhancement (Fig. 1). As opposed to most ...