Breast Density / Pain ...

[sonny side]

I am 41 years old, with a family history of breast cancer (sister @ 41).  Had a benign lump removed from right breast 15 years ago, and that is the area that still is an issue.  My right breast is very dense.  For over a year now, I have had problems .... pain/tightness/pressure/zinging feeling.  I have had a mammo/ultrasound every six months, in addition to a biopsy (path. report:  sclerosing adenosis, patchy lactational effect).  The pre-op diagnosis was FC vs CA, which I presume means fibrocystic changes vs cancer.  The post-op diagnosis simply said "same".  (That in itself is a little strange to me -- why wasn't it more definitive?)  My questions are:
(1) If you have dense breasts to begin with, are both breasts usually this way, or is it not uncommon to just have one dense breast?  (2) When I raise my hands over my head, my nipples do not allign at all ... left nipple goes up, right nipple stays low, almost as if it's being pulled by something.  Is this unusual?  
If you are able to answer my questions, I thank you for your time. It is appreciated.

[CCF-RN,MSN-JS]

Dear sonny side, It is not unusual for there to be differences between breasts in an individual.  With following your situation you want to have evaluation what is a difference for you.  If the assymetry (difference between your breasts) has changed, you would want to have that change evaluated.

[surgeon]

the postop diagnosis is not based on a pathology report; it's what the surgeon says when dicatating the op report, which is usually done immediately after finishing the operation, and often before any lab reports are available. So in general the pre and post op diagnosis is the same for any operation, unless something occurs or is found during surgery that changes things. For example: pre op diagnosis  "appendicitis" post op diagnosis "ruptured ovarian cyst." In your case, the reason for the biopsy didn't change, so the operative rationale didn't change.

It's not rare for the two breasts to be quite different in size and/or density. In some cases it's important to be sure why, and it sounds so far as if your surveillance is reassuring.