My 8 year old sister has a lump in her left breast ...

I have an 8 year old sister and she complained of a lump that appeared in the left breast, very close to the nipple, about the size of a key on the computer keyboard. According to her the place was not beaten, or anything, and she complains that with the touch, it hurts a little. This is normal? What can it be? Thank you in advance for your attention. I'm very worried.
Expert answer:

It may be the "breast bud" which means that her breasts will begin to develop, such as a lump in the breast, she should go to the doctor.

Category