Atypical Hyperplasia of the Breast

Atypical hyperplasia of the breast is most often diagnosed during a breast biopsy. A breast biopsy is a procedure to remove a sample of breast tissue for testing. It’s often done if something concerning is found during a clinical breast exam or on an imaging test, such as a mammogram or an ultrasound.

Treatment

Treatment for atypical hyperplasia of the breast may involve surgery to remove the atypical cells. Not everyone needs surgery. Your healthcare team might recommend more-frequent breast cancer screening to watch for signs of breast cancer. You also might consider medicine to lower your risk of breast cancer.

Surgery

Atypical hyperplasia of the breast may be treated with surgery to remove the atypical cells. This might be recommended if mammogram images show something concerning. Members of your healthcare team typically decide whether to recommend surgery based on a discussion of your imaging test results, the results of your breast biopsy and other factors.

If you have surgery, the tissue removed during the operation is tested in the lab to look for signs of cancer. Most people who have surgery for atypical hyperplasia don’t have breast cancer. But sometimes the surgery finds noninvasive breast cancer, also called ductal carcinoma in situ, or invasive breast cancer.

Not everyone with atypical hyperplasia of the breast needs surgery. Some healthcare teams may not recommend surgery if there is a low risk of finding cancer. The level of risk may depend on the findings of your mammogram images and other factors, such as your medical history and past breast operations. Your healthcare team carefully considers your biopsy results and your other health conditions when choosing the treatment plan that’s best for you.

Medicine to lower the risk of breast cancer

Medicines that block the hormone estrogen in the body can lower the risk of breast cancer. Most breast cancers use estrogen and other hormones to help the cancer grow. Blocking estrogen helps stop cancer from forming.

Hormone-blocking medicines that are used to lower breast cancer risk include:

• Tamoxifen
• Raloxifene (Evista)
• Anastrozole (Arimidex)
• Exemestane (Aromasin)

These medicines are typically taken daily for five years to reduce the risk of breast cancer. The medicine tamoxifen is sometimes taken in a lower dose every other day. Talk with your healthcare team about which medicine is best for you.

Careful monitoring for breast cancer

Atypical hyperplasia of the breast increases the risk of breast cancer. So your healthcare team creates a breast cancer screening plan. You might have more-frequent screening or different screening tests than would someone with an average risk of breast cancer.

Your breast cancer screening may include:

• Breast self-exams for breast awareness to become familiar with the typical look and feel of your breasts.
• Clinical breast exams by a healthcare professional once or twice a year.
• Screening mammograms once a year.
• Additional breast cancer screening tests based on your other risk factors for breast cancer. These other tests may include breast MRI, molecular breast imaging and other supplemental breast imaging tests. Which test is best for you may depend on your risk factors for breast cancer, your family history of breast cancer, whether you have DNA changes that increase the risk of breast cancer and whether your mammogram images show that you have dense breasts.

Other ways to lower your risk of breast cancer

To reduce your risk of breast cancer, your healthcare team may recommend that you:

• Avoid hormone therapy for menopause. Certain kinds of medicines that use hormones to help control symptoms of menopause can increase the risk of breast cancer. If you have menopause symptoms, ask your healthcare team about treatments that won’t increase your risk of breast cancer.
• Consider surgery to lower the risk of breast cancer. If you have a very high risk of breast cancer, your healthcare team might recommend surgery to lower your risk. Your risk might be high if you have a strong family history of breast cancer. Your risk also may be high if DNA changes that increase the risk of breast cancer run in your family. One operation that can lower the risk of breast cancer is surgery to remove both breasts. This procedure is called a risk-reducing mastectomy or a prophylactic mastectomy.
• Make healthy lifestyle choices. Make healthy choices in your daily life to reduce your risk of breast cancer. For instance, exercise most days of the week and maintain a healthy weight. Don’t smoke. Limit the amount of alcohol you drink, if you choose to drink alcohol. For breast cancer prevention, there is no safe amount of alcohol. So if you’re very concerned about your breast cancer risk, you may choose to not drink alcohol.
• Participate in a clinical trial. Clinical trials test new treatments. Trials testing the best way to manage the risk of breast cancer in people with atypical hyperplasia may be available. Ask your healthcare team about clinical trials.