Our expert says:
Dear Concerned Mom
In girls aged 10-14 years the bump you feel may be breast tissue starting to develop, and it may often be more in the one breast than the other ( the breasts don't always grow symetrically) Removing a lump in a small girls breast may in reality have the same effect as a mastectomy so we would almost never operate on a breast lump in a little girl. Let your GP have a look - if he is worried he can send her to a surgeon for further tests ( sonar or maybe a sample with a thin needle under local or general anaesthetic) The most likely cause is that it is just normal breast tissue that is reacting on hormonal changes in her body.
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