ComplicationsBy Mayo Clinic staff
Increased risk of breast cancer
If you've been diagnosed with atypical hyperplasia, you have an increased risk of breast cancer in the future. Women with atypical hyperplasia have a risk of breast cancer that is about four times higher than that of women who don't have atypical hyperplasia.
Being diagnosed with atypical hyperplasia at a younger age may increase the risk of breast cancer even more. Women diagnosed with atypical hyperplasia before age 45 have a greater risk of developing invasive breast cancer during their lifetimes, compared with older women, especially those older than 55.
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