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Symptoms
By Mayo Clinic staffFibroadenomas are solid breast lumps or masses that usually are:
- Round with distinct borders
- Easily moved
- Firm or rubbery
- Painless
A fibroadenoma may feel like a marble within your breast when you press on it. You can have one or many fibroadenomas. The average fibroadenoma is about an inch (2.5 centimeters) in diameter. Those larger than 2 inches (5 centimeters) are called giant fibroadenomas.
Fibroadenomas first occurring during adolescence are called juvenile fibroadenomas. They can grow rapidly and become as large as 4 inches (10 centimeters) in diameter.
When to see a doctor
Normal breast tissue in healthy women often feels lumpy. If you detect any new breast lumps — or if a previously evaluated breast lump seems to have grown or otherwise changed — make an appointment with your doctor to get it checked out.
- Valea FA, et al. Benign breast disease. In: Katz VL, et al. Comprehensive Gynecology. 5th ed. Philadelphia, Pa.: Mosby Elsevier; 2007. http://www.mdconsult.com/das/book/body/208746819-4/0/1524/0.html. Accessed March 24, 2011.
- Understanding breast changes: A health guide for women. National Cancer Institute. http://www.cancer.gov/cancertopics/screening/understanding-breast-changes/AllPages. Accessed March 24, 2011.
- Sabel MS. Overview of benign breast disease. http://www.uptodate.com/home/index.html. Accessed March 24, 2011.
- Iglehart JD, et al. Benign breast tumors and related diseases. In: Townsend CM Jr, et al. Sabiston Textbook of Surgery: The Biological Basis of Modern Surgical Practice. 18th ed. Philadelphia, Pa.: Saunders Elsevier; 2008. http://www.mdconsult.com/das/book/body/208746819-6/0/1565/0.html. Accessed March 24, 2011.
- Non-cancerous breast conditions: Fibroadenomas. American Cancer Society. http://www.cancer.org/Healthy/FindCancerEarly/WomensHealth/Non-CancerousBreastConditions/non-cancerous-breast-conditions-fibroadenomas. Accessed March 24, 2011.
- Pruthi S (expert opinion). Mayo Clinic, Rochester, Minn. April 5, 2011.
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