Causes of breast lumps:

There are many possible causes for lumps in the breast. Most breast lumps are benign, as in fibroadenoma, a condition that affects mostly women under age 30. Breast abscesses are usually incidental to breastfeeding.
- Reviewed last on: 8/27/2007
- Stephen Grund, M.D. Ph.D., Chief of Hematology/Oncology and Director of the George Bray Cancer Center at New Britain General Hospital, New Britain, CT. Review provided by VeriMed Healthcare Network.