(HealthDay News) --Some 80 percent of breast lumps biopsied turn out to be benign (non-cancerous), says the Stony Brook Cancer Center.
The most common benign breast condition is a fibrocystic change. These are small, fluid-filled sacs, commonly labeled as cysts. The size and tenderness of such a lump often increases before menstruation.
Another type of lump, fibroadenomas, are benign tumors that account for most breast tumors in women under age 25.
A third type, papillomas, are small, wart-like lumps that grow near the nipple. They often result in clear or bloody discharge from the nipple, the center says.