Mayo Clinic Q&A: What do you need to know about dense breasts?

Dense Breasts: What You Need to Know

A reader recently asked about dense breast tissue after receiving results from a mammogram. The Mayo Clinic provides insight into this common condition.

I just had a mammogram, and I was told that I have dense breast tissue.

About half of women are considered to have dense breasts, based on the appearance of their breast tissue on a mammogram. The main concerns about dense breast tissue are that it makes breast cancer screening more complex and increases the risk of breast cancer.

Understanding Breast Tissue

Breast tissue is composed of milk glands, milk ducts, and supportive tissue, which make up dense tissue. Breasts also include fatty tissue, which is nondense tissue.

Author's summary: Dense breast tissue affects half of women, complicating cancer screening.

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Post Bulletin Post Bulletin — 2025-10-26

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