A breast scan, also known as sonomammography or breast ultrasound, is a non-invasive, radiation-free imaging test used to evaluate breast tissue. This safe procedure utilizes high-frequency sound waves to create real-time images of the internal breast structures. Clinicians commonly use it as a targeted, diagnostic follow-up to check a specific area of concern, such as a lump felt during a physical exam or an abnormality detected on a screening mammogram. It is an invaluable medical tool because it easily differentiates between harmless fluid-filled cysts and solid masses that may require a biopsy.

Sonomammography is particularly effective for women with dense breast tissue, as dense tissue can obscure small abnormalities on standard X-ray mammograms. It is also the preferred primary imaging method for pregnant or breastfeeding women and patients under 30 who need breast evaluation. The procedure is quick and painless, requiring only a clear gel and a small hand-held transducer rolled gently across the skin.