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Call (425) 899-2831 or use our online form to make an appointment at our Kenmore, Kirkland and mobile coach locations.

Breast Density

What is breast density?

Your breasts are made up of a mixture of fibrous and glandular tissue and fatty tissue. They are considered dense if you have a lot of fibrous or glandular tissue but not much fat.

Density may decrease with age, but there is little, if any, change in most women.

Why is breast density important?

Having dense breast tissue may increase your risk of getting breast cancer. They also make it more difficult to spot cancer on mammograms, because dense tissue appears white on a mammogram as do benign and cancerous lumps.

How do I know if I have dense breasts?

Breast density is determined by the radiologist who reads your mammogram. Your doctor should be able to tell you whether you have dense breasts based on where you fall on the mammographic density scale:

breast density scale

If I have dense breasts, do I still need a mammogram?

Yes. A mammogram is the only medical imaging screening test proven to reduce breast cancer deaths.

Many cancers are seen on mammograms even if you have dense breast tissue.

Are there any tests that are better for dense breasts?

Studies have shown that ultrasound and magnetic resonance imaging (MRI) can help find breast cancers that can’t be seen on a mammogram.

However, both MRI and ultrasound show more findings that are not cancer, which can result in added testing and unnecessary biopsies. Also, the cost of ultrasound and MRI may not be covered by insurance.

What should I do if I have dense breasts? 

If you have dense breasts, please talk to your doctor. Together, you can decide which, if any, additional screening exams are right for you.

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