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Complications
By Mayo Clinic staffBreast cancer risk increases with some types of fibroadenomas.
Simple fibroadenomas
Most fibroadenomas are simple fibroadenomas. These masses have distinct borders and uniform-looking cells. Simple fibroadenomas do not increase your risk of breast cancer, especially if you have no family history of breast cancer.
Complex fibroadenomas
These fibroadenomas contain cysts, enlarged breast lobules (adenosis) or bits of dense, opaque tissue called calcifications. Complex fibroadenomas don't turn into breast cancer, but they do increase your risk of later developing breast cancer by a factor of about 2 to 3. However, your overall risk of developing breast cancer after being diagnosed with a complex fibroadenoma remains low.
- American Cancer Society. Non-Cancerous Breast Conditions. Accessed May 18, 2009.
- Giuliano AE. Breast Disorders (Chapter). In: McPhee SJ, et al, eds. Current Medical Diagnosis & Treatment 2009, Forty-Eighth Edition. New York, N.Y.: The McGraw-Hill Companies. 20009. http://www.accessmedicine.com/content.aspx?aID=8538. Accessed May 18, 2009.
- Sabel MS. Overview of benign breast disease. http://www.uptodate.com/home/index.html. Accessed May 18, 2009.
- National Cancer Institute. Understanding Breast Changes: A Health Guide For Women. http://www.cancer.gov/cancertopics/understanding-breast-changes. Accessed May 18, 20009.
- Fletcher SW et al. Primary care evaluation of breast lumps in adult women, http://www.uptodate.com/home/index.html. Accessed May 18, 2009.
- Courtillot C, et al. Benign breast diseases. J Mammary Gland Biol Neoplasia. 2005; 10:325-335.
- Harris JR et al. Diseases of the breast. Philadelphia, Pa.:Lippincott Williams & Wilkins, 2004, p. 45-47.
