Dense Breasts? Why a Second Look Could Make All the Difference
If you have dense breasts, understanding what that means — and knowing your options — can make an important difference in your breast health.
Dense breast tissue is common, affecting nearly half of women age 40 and older who undergo mammography. But it matters for two important reasons: dense tissue is associated with a higher risk of breast cancer, and it can make cancers harder to detect on a mammogram.
That is because dense tissue and many cancers both appear white on mammograms. As Dr. Joseph Russo, founder of Second Look Imaging, explained in an October 31, 2026 Morning Call article, it can be like trying to find a snowball in a snowstorm.
Five smart steps if you have dense breasts
1. Know your breast density.
Your mammogram results should tell you whether your breasts are dense. Federal rules require mammography facilities to notify patients about breast density. Read your report and ask what your density category means.
2. Understand your personal risk.
Breast density is only one factor. Family history, genetics, age and other considerations all matter. Ask your healthcare provider to assess your overall breast cancer risk.
3. Discuss additional screening.
Depending on your risk, supplemental screening such as breast MRI or ultrasound may be appropriate. Additional tests have benefits and drawbacks, including false alarms, so make the decision with your clinician.
4. Pay attention to changes.
Report a new lump, nipple discharge, skin changes or persistent focal breast symptoms promptly, even if your last mammogram was normal.
5. Consider an expert second opinion.
Breast imaging can be complex, and another breast imaging specialist may clarify a finding or a recommendation. A second opinion can sometimes identify concerns or help avoid unnecessary procedures.
What the research actually shows
In a Memorial Sloan Kettering study of 209 selected patients, a second-opinion review followed by repeat real-time breast ultrasound changed clinical management in 32.5% of cases. Additional cancers were detected in 5.3% of patients, while previously recommended biopsies were canceled for 14.8%. These figures do not describe routine mammogram screening or imply that one-third of all mammograms are incorrect.
A separate 2022 study of 400 patients seeking second-opinion breast imaging review found differences in ultrasound interpretation more frequently among patients with dense breasts (36%) than among those without dense breasts (19%). These studies involved selected referral populations, so results may not apply to every patient.
Confidence comes from being informed
Seeking a second opinion does not mean distrusting your physician. It means taking an active role in your health. At Second Look Imaging, Dr. Joseph Russo provides independent specialist reviews of existing breast imaging to help women better understand their findings and discuss next steps with their care team.
The process is straightforward: send your existing mammograms, ultrasounds or MRIs along with their reports, and within 48 to 72 hours you will receive a written report and a one-on-one video consultation with Dr. Russo to walk through it — a direct-pay service, with no insurance and no referral needed.
Dense breasts do not have to mean uncertainty. Be informed, ask questions, and take an active role in your breast health.
Research references
Horvat et al., Second opinion interpretation of breast ultrasound images — is it worth another look?
https://pmc.ncbi.nlm.nih.gov/articles/PMC7552571/
Weinfurtner et al. (2022), Repeat Breast Ultrasound Demonstrates Utility with Added Cancer Detection...
https://pubmed.ncbi.nlm.nih.gov/35711880/
This article is educational and does not replace individualized medical advice.