From: Breast lesions in women under 25 years: radiologic-pathologic correlation
US descriptor | Features favoring benign | Features favoring malignant | Indeterminate features |
---|---|---|---|
Shape of mass | Oval | Irregular | |
Orientation of mass | Parallel to skin | Not parallel to skin | |
Margin of mass | Circumscribed | Micro-lobulated, indistinct, angular, or spiculated | |
Lesion boundary | Abrupt interface | Echogenic halo | |
Echo pattern | Anechoic or hyperechoic | Complex | Isoechoic or hypoechoic |
Posterior acoustic features | Shadowing or combined pattern | Enhancement or no posterior acoustic features |