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Norfolk, MA
A 35-year-old female asked:

I had a screening mammogram an it came back negative but report says heterogeneously dense breast, what does this mean and how accurate are the result?

2 doctor answers2 doctors weighed in
Dr. Michael Zadeh
General Surgery 18 years experience
Normal finding: Dense breasts on mammogram are usually seen in younger women with fuller breasts. I wonder why you would be getting a screening mammogram at age 35? Do you have a family history of breast cancer?
Dr. Michael Gabor
Diagnostic Radiology 34 years experience
Dense breasts: "Dense" breasts are normal, but decrease the sensitivity of the mammo for detecting cancers. Some studies show that the sensitivity of mammography in this setting can decrease to as low as 50%. Also, dense breasts are an independent risk factor for developing breast cancer, and cancers discovered in women with dense breasts tend to be more advanced.
Last updated May 28, 2017

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