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Having a complex or juvenile fibroadenoma may slightly increase the risk for developing breast cancer in the future.
The cause of fibroadenoma is not known.
A fibroadenoma usually occurs as a single lump, but sometimes there may be more than one lump. They can occur in one breast or in both breasts. Fibroadenomas vary in size. They usually do not cause pain unless they grow large.
This information is not intended to replace advice given to you by your health care provider. Make sure you discuss any questions you have with your health care provider.
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