Women with this noncancerous (benign) condition often have lumpy, nodular breasts and experience breast pain
that varies throughout the menstrual cycle
. Doctors don't know exactly what causes fibrocystic breast changes, but the condition is likely due to hormone
changes during your menstrual cycle that affect breast tissue. Although fibrocystic breast changes don't increase your risk of breast cancer
, having fibrocystic breasts
may make it more difficult for you to feel a new breast lump
or other abnormal change — such as a persistent breast lump that doesn't go away with your next menstrual cycle or thickening or firmness within lumpy breast tissue. It's important to become familiar with how your breasts normally feel so that you'll know when something just isn't right. If you detect something unusual, make an appointment with your doctor to have it evaluated.