Breast Cancer

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If your mammography report says you have dense breasts, what does it mean?
If your mammography report says you have dense breasts, what does it mean?
If your mammography report says you have dense breasts, what does it mean?
Basic Information
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Learn what breast cancer is and about symptoms, risk factors, mammograms, diagnosis, and treatment for breast cancer.

Statistics
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Breast cancer is the second most common cancer among women in the United States. The Data Visualizations Tool provides detailed statistics.

Low-Cost Screening
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CDC’s National Breast and Cervical Cancer Early Detection Program provides low-cost breast and cervical cancer screenings. Learn more.

What Does It Mean to Have Dense Breasts?
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When you get the results of your mammogram, you may also be told if your breasts have low or high density. Dr. Temeika Fairley explains what that means and why it’s important in this video.

Featured Resources
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CDC’s Bring Your Brave campaign educates younger women about breast cancer.

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Learn about symptoms of breast cancer in men and things that may increase your risk.

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Learn what triple-negative breast cancer is and how it’s treated.

CDC works with partners to reduce the burden of breast cancer in the United States. Learn what CDC is doing.

Page last reviewed: September 20, 2021
Content source: Division of Cancer Prevention and Control, Centers for Disease Control and Prevention