Breasts are made up of lobules (milk-producing glands) and ducts (tubes that carry milk to the nipple), which are surrounded by glandular, fibrous supporting tissue and fatty tissue. Fibroadenomas develop from a lobule. The glandular tissue and ducts grow over the lobule and form a solid lump. Fibroadenomas are benign (not cancer) and don’t increase the risk of developing breast cancer. They are thought to occur because of an increased sensitivity to the female hormone oestrogen.A fibroadenoma usually has a smooth rubbery texture and can move easily under the skin. Fibroadenomas are usually painless, but some people may feel some tenderness or even pain.
A fibroadenoma may feel like a marble within your breast when you press on it. A fibroadenoma is usually diagnosed through clinical examination, ultrasound or mammography, and often a needle biopsy sample of the lump. In many cases, fibroadenomas require no treatment. However, some women choose to have their fibroadenomas surgically removed for their peace of mind.Lumpectomy and cryoablation surgeries are performed to treat this condition. They are the most common breast tumor in adolescent women. They also occur in a small number of post-menopausal women. Their incidence declines with increasing age, and, in general, they appear before the age of thirty years.