Dense Breasts May Obscure Mammogram Results

A Gynecology Specialists note: A New York Times piece by Roni Caryn Rabin explored what it means to learn you have dense breast tissue — and why that matters for your mammogram results. Here is a summary of her reporting, along with our perspective.

What the article covered

The writer described receiving a “normal” mammogram letter that mentioned, several paragraphs in, that her breast tissue was dense — something she had never been told despite years of screening. Dense tissue shows up white on a mammogram, and so do tumors, which one gynecologist in the piece compared to searching for a drop of milk through a snow-covered window. Mammograms miss roughly half of all breast cancers in women with dense tissue, and about 40 percent of women who have mammograms have dense breasts.

The article traced the wave of state laws — championed by a Connecticut woman whose own cancer went undetected on years of normal mammograms — that now require women to be notified about their breast density. It also laid out the genuinely unsettled medical guidance: some state letters suggest discussing additional screening such as ultrasound or MRI with your doctor, while ACOG does not recommend extra screening tests solely because a woman has dense breasts, and the American College of Radiology notes there is no good data showing added scans help women live longer. Experts in the piece emphasized that women with dense breasts should not panic or stop getting mammograms — mammograms detect cancers in women with dense breasts every day — and that digital and 3D mammography perform better than film for dense tissue, while additional scans do catch some cancers but also generate false alarms and biopsies.

Our takeaway for patients

If your mammogram report notes dense breast tissue, don’t ignore it and don’t be alarmed by it — bring it to your GYN doctor. Together we can look at your overall risk factors and decide whether supplemental screening makes sense for you.

If you have questions about mammograms, dense breast tissue, or breast cancer, please contact our GYN Clinic at (757) 312-8221. Our GYN doctors can help you.