Breast imaging information
Dense Breasts and Imaging
Breast density describes how much fibrous and glandular tissue is seen compared with fat on a mammogram. Dense breasts are common and can make mammograms harder to interpret. Density alone does not tell you whether you have cancer or which test you need.
Contact the practice
Density is an imaging finding
Density is assessed from the mammogram. It describes the balance of fibrous and glandular tissue compared with fat; it cannot be reliably judged by how the breast feels.
Your report may describe the density alongside other findings. Ask your clinician what it means for interpreting your images and planning your care.
Why density matters for mammography
Dense tissue and many abnormalities both appear white on mammograms, so dense tissue can make some findings harder to see. This is sometimes called masking.
Mammography remains useful, including for findings such as calcifications. Density does not mean that the examination has no value or that a mammogram should automatically be replaced by ultrasound.
Risk needs a wider context
Dense breast tissue is associated with a higher risk of breast cancer as well as making detection more difficult on mammography. These are related considerations, but neither means that a particular person will develop cancer.
Your clinician considers density with other factors, including age, personal and family history and earlier findings. Avoid comparing your risk with someone else’s on the basis of a density label alone.
Imaging is selected for the individual
Tomosynthesis, also called 3D mammography, creates reconstructed views that can reduce the effect of overlapping tissue. It may help detection, but does not remove every limitation of breast imaging.
Ultrasound may be used to assess a particular finding or considered as additional imaging in selected circumstances. Additional testing can also lead to false alarms and biopsies of findings that prove benign.
There is no recommendation here for every person with dense breasts to have the same additional test. Discuss the potential benefit, limitations and your individual risk with the clinician.
Questions for your next review
A new breast change still needs a clinical discussion. Do not attribute a lump or another symptom to density without assessment.
- Which density pattern is described in my report?
- Does my personal or family history affect the imaging plan?
- Would additional imaging help answer a specific question in my case?
- What are the possible benefits and drawbacks of the proposed test?
- When should I return, and whom should I contact about a new symptom?
Common questions
Can I tell my breast density by touch?
No. Breast density is an imaging description based on the mammogram, not a judgement about breast firmness or size.
Does everyone with dense breasts need ultrasound?
No. Additional imaging should be considered individually, taking account of symptoms, risk and existing imaging findings as well as the benefits and limitations of another test.
Should I skip mammography if my breasts are dense?
Do not change your imaging plan on the basis of density alone. Discuss the appropriate examinations and follow-up with your treating team.
Patient information sources
Discuss density alongside the whole report
Bring previous imaging and any questions about risk or additional examinations. Your plan should reflect your circumstances, not the density label alone.
Contact the practice