Breast Ultrasound
Breast ultrasound uses high-frequency sound waves to look inside the body.
It may be used to complement mammography among women with dense breast tissue, but it is not currently recommended to replace a screening mammogram.
Breast ultrasound is useful in evaluating breast problems that are revealed during screening or diagnostic breast exams, and is the only way to identify a cyst without placing a needle into the suspicious area to withdraw fluid. The technique is also used to provide image guidance for needle biopsies.