Atypical hyperplasia usually doesn't cause any specific symptoms.
When to see a doctor
Make an appointment with your doctor if you have any signs or symptoms that worry you.
Atypical hyperplasia typically doesn't cause symptoms, but it may cause changes to appear on a mammogram. Atypical hyperplasia is usually discovered during a breast biopsy to investigate an abnormality found on a mammogram. Sometimes atypical hyperplasia is discovered on a biopsy done for a different condition.
Jan. 08, 2015
- Kumar V, et al. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Philadelphia, Pa.: Saunders Elsevier; 2015. http://www.clinicalkey.com. Accessed Aug. 21, 2014.
- AskMayoExpert. Atypical hyperplasia of the breast. Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2014.
- Degnim AC, et al. Stratification of breast cancer risk in women with atypia: A Mayo cohort study. Journal of Clinical Oncology. 2007;25:2671.
- Breast cancer risk reduction. Fort Washington, Pa.: National Comprehensive Cancer Network. http://www.nccn.org/professionals/physician_gls/f_guidelines.asp. Accessed Aug. 21, 2014.
- Breast cancer screening and diagnosis. Fort Washington, Pa.: National Comprehensive Cancer Network. http://www.nccn.org/professionals/physician_gls/f_guidelines.asp. Accessed Aug. 21, 2014.
- Pruthi S (expert opinion). Mayo Clinic, Rochester, Minn. Sept. 6, 2014.
- Hartmann LC, et al. Atypical hyperplasia of the breast — Risk assessment and management options. New England Journal of Medicine. 2015;372:78.
- Hartmann LC, et al. Understanding the premalignant potential of atypical hyperplasia through its natural history: A longitudinal cohort study. Cancer Prevention Research. 2014;7:211.