Hello,
It can be an accessory breast tissue or supernumerary breast tissue which occurs in occurs in 2-6% of females and has no physiologic significance, but some may enlarge with the onset of puberty, pregnancy, or lactation, and can be the site of breast carcinoma. The second possibility is of a benign growth like a lipoma.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
Hi
I have the exact same problem, and went to see a doctor, but he told me that it was just tissues.. I have had it for a few years now, but am still concerned about it.. I am not overweight, but do experience pain once in while as well, especially when pressed. Glad you brought it up, cos i have somehow learned to live with it, and totally forget that it might be a health issue.