Ultrasound

Breast ultrasound examination may be performed at any age as a standalone diagnostic method or as an addition after mammography. 

Just like mammography, this is a safe technique which allows to assess the state of lymphatic nodes, explore the detailed breast structure and the thickness of the ducts etc. And first of all, it provides an opportunity to differentiate whether the formation detected on mammography or on palpation is filled with fluid or dense tissue. This will inform the diagnostician’s recommendations and if there is a need to perform a biopsy.

If necessary, this diagnostic procedure may be performed in men. 

Online reference