Most breast lumps are benign (not cancerous). Fibrocystic changes usually cause most of these lumps. Fibrosis refers to excessive formation of scar-like connective tissue; cysts are fluid-filled sacs. Women with fibrocystic changes often experience breast swelling and pain. The breasts may feel lumpy and the nipple may discharge a clear or slightly cloudy liquid.

Benign breast lumps such as fibroadenomas or papillomas are quite common. They cannot spread outside of the breast to other organs. Talk to your doctor about whether he or she feels it necessary to remove these lumps.