Understanding Dense Breasts
Dear Mayo Clinic, I just had a mammogram and was told I have dense breast tissue.
Answer: About half of women are considered to have dense breasts based on their mammogram results.
Main Concerns
The main concerns about dense breast tissue are that it makes breast cancer screening more complex and increases the risk of breast cancer.
Composition of Breast Tissue
Breast tissue is composed of milk glands, milk ducts, and supportive tissue, which make up dense tissue, as well as fatty tissue, which is nondense tissue.
Mammogram Appearance
On a mammogram, women with dense breasts have more dense tissue than fatty tissue. Nondense breast tissue appears dark and transparent, while dense breast tissue appears as a solid white area, making it difficult to see through.
About half of women are considered to have dense breasts.
Author's summary: Dense breast tissue affects breast cancer screening and risk.
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