Large breast lump in 16 Year old Daughter

My 16-year-old daughter recently had an ultrasound for large breast lump. I have not yet received report. She had a trauma to that breast about 10 months ago, in gym class a kid dropped a 20 lb weight on it, they put ice on it, and she didn't feel it necessary to tell me, although she tells me now, she had bruising all over and down almost to waist, and it hurt immensely.  At the same time she was put on Alesse birth control pills for Middleshmertz?sp syndrome.  The lump is very hard, easily moveable, sore to touch, almost feels flat kind of, or at least not like a round cyst or anything, and it's large, about 3 X 3 inches.  My GP told me it could be from the trauma, but would it have gotten bigger over several months? Seems to have stopped now.  Should I look into the birth control pill causing this?  Or more likely is it fibroadenoma, I know young girls often get these and they can be large, but would it feel this hard and irregular?  My GP said he would not suggest doing anything about any of these outcomes, because it would cause scar tissue,is that the right thing to do in your opinion? We have no history of BC in family, closest is 1 cousin.

[CCF-RN,MSN-JS]

Dear saturn99,  It could very well be that the trauma to the breast caused a hematoma (brusing).  However, having this checked out is advisable. See what the ultrasound findings are.  You may want to have your daughter see a breast specialist, they can help to advise about how best to further evaluate (if needed) or what would be recommended in terms of whether anything needs to be done to manage this lump.  Breast cancer in a 16 year old would be very uncommon.

[surgeon]

My guess would be that the ultrasound will not tell you anything new: it will show a solid lump, which is what one would expect in a 16 year old. Cysts are nearly unheard of at her age, as is cancer. It's possible it could be a hematoma from the injury; fibroadenoma is certainly on the list as well. Seeing a breast specialist might help in the decision about what to do: observe, biopsy, or remove.

[Arzola]

Hi,
I'm 46 femal, I've been wearing recently wire bras. Under my arm, right breast, where the end of the wire exactly rested (I always felt the end of this wire pushing in my skin) I had a small flat lump with a bruise which didn't go away. All this happened in a matter of one month. I recently had a biopsy which revealed neuroendocrine carcinoma. This was followed several days later with a tylectomy w/ axillary disection of 15 nodules. Thanks the Lord, all nodules came out negative. I'm in a healing process, came out of surgery Tuesday May 4. I have not seen this type of cancer in the list of breast cancers. I feel like the only person with this, since I have search the internet with no answers. I do beleive that probally a outside source as a trauma has caused this. No close femals in the family with breast cancer. My grandmother will turn 100 next year. Thank you.