Mayo Clinic Health Manager
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Get StartedCauses
By Mayo Clinic staffBreast lump causes:
- Breast cancer
- Breast cysts
- Fibroadenoma
- Fibrocystic breasts
- Hamartoma
- Injury or trauma to the breast
- Intraductal papilloma
- Lipoma
- Mastitis
- Milk cyst (galactocele)
Causes shown here are commonly associated with this symptom. Work with your doctor or other health care professional for an accurate diagnosis.