Fibroid Adenoma Biopsy

I am 19 years old and recently found a lump in my breast. I went to the obgyn and had a exam. She referred me to get an ultrasound to determine if it was a cyst or a fibroid Adenoma. They confirmed that it was a fribroid adenoma. My older sister also had this exact same thing and had to have it biopsied-my grandmother also has Breast cancer, though. So now they're telling me I have to have it biopsied but I really would rather not because I've gotten opinions from a doctor I know and other sources tell me the chances of having breast cancer at 19 are extremeley slim. I would be fine with not having it done. Do you think it is necessary-especially since my sister had it? Could it possibly be genetic or linked within in the family in some way?

[japdip]

Fibrocystic Breast condition affects nearly half of all women and these tumors are benign. If a biopsy is recommended I would certainly follow thru with it since this is the only way to be 100% certain of the true nature of any breast lump. Experience of the Radiologist can certainly indicate that a finding is most likely something specific but a biopsy is never a bad idea. The fact that your Sister had a Fibroadenoma has nothing to do with the lump that you have ... I'd rather be safe than sorry ....  Regards