In contrast to a cyst, a fibroadenoma is a solid lump of fibrous tissue with compressed breast ducts. Fibroadenomas are usually painless, and they probably arise due to hormonal changes in the breast.

Fibroadenomas tend to grow to around 1-2cm in diameter and then stop growing. They generally do not disappear, but are entirely harmless and never turn into breast cancer. All fibroadenomas should be carefully checked to prove their identity conclusively. Some fibroadenomas can feel very similar to small breast cancerous lumps, and this is the reason why careful investigations, usually including an ultrasound and needle biopsy are very important.

Once a lump has been shown to be definitely a fibroadenoma it is safe to leave. Alternatively a fibroadenoma can be removed by a small operation. A new treatment which can be performed at The Harley Street Breast Clinic is for fibroadenomas to be removed through a suction needle leaving a very small scar.