Ok, I am back again. I did a search by entering "Fibrocystic Breast Disease or Benign Breast Disease". There was numerous links giving symptoms, causes, etc. From what I read Thirty percent of American women have fibrocystic breast disease, a benign (noncancerous) condition characterized by round lumps that move freely within the breast tissue. This lumps are usually tender to the touch.
The texture of the lumps can vary from soft to firm. For many women, the tenderness may increase as menstruation approaches. Often the cysts fill with fluid and can enlarge premenstrually in response to the increase in hormonal levels during this time. With repeated cycles of hormonal stimulation, the breast cysts may become chronically inflamed and surrounded by fibrous tissue which can harden and thicken the cysts. It is then more difficult for the fluid trapped in the cysts to escape and be reabsorbed by the body. This condition occurs most frequently in women in their late thirties and forties. To distinguish these hardened cysts from cancer, physicians often perform a simple office procedure called a needle aspiration. In this procedure, a needle is used to remove fluid from the cyst. This helps relieve pressure from the cyst on the surrounding tissue if it is causing pain, as well as rule out breast cancer. A mammogram will also help distinguish a breast cyst from breast cancer.
I don't know if this is the info that you were looking for but I hope that it helps.