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Causes of breast lumps

Most breast lumps are benign, as in fibroadenoma, a condition that affects mostly women under age 30. Fibrocystic breast disease is present in over 60% of all women. The cysts in FBD change in size with the menstrual cycle, whereas a lump from fibroadenoma does not. While most breast lumps are benign it is important to identify those that are not. If a lump is new, persistent, growing, hard, immobile, or causing skin deformities, you should see a health care professional.

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