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The information contained on this page is provided as general health information and is not intended to substitute as medical advice and direction from your physician or health care provider. Please direct any questions related to your health care provider. In an emergency, call 9-1-1 or go to the nearest emergency center.


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. Causes of breast lumps