Breast lump

Other causes of breast lumps include:

• Milk cysts (sacs filled with milk) and infections (mastitis), which may turn into an abscess. These typically occur if you are breastfeeding or have recently given birth.
• Breast cancer , found on mammogram or ultrasound , then a biopsy . Men also can get breast cancer.
• Injury -- sometimes if your breast is badly bruised, there will be a collection of blood that feels like a lump. These lumps tend to get better on their own in a matter of days or weeks. If not, your doctor may have to drain the blood.
• Lipoma -- a collection of fatty tissue.
• Intraductal papilloma -- a small growth inside a milk duct of the breast. This often occurs near the areola, the colored part of the breast surrounding the nipple, in women ages 35-55. It is harmless and often cannot be felt. In some cases the only symptom is a watery, pink discharge from the nipple. Since a watery or bloody discharge can also be a sign of breast cancer, your doctor should check this.