Gynecomastia, zyprexa, and prolactin

[Tripp]

I have been on Zyprexa (a mood stabilizer/antipsychotic) for about ten years now, and have developed moderate gynecomastia that hasn’t gone away despite my losing quite a bit of weight over the past year.  My primary care doctor has indicated that she believes my chest situation is due to the zyprexa, but my psych med prescriber had my prolactin levels tested, and they came back normal.  She told me this indicates that the zyprexa is not to blame.  Is it true that if the zyprexa were the cause, my prolactin levels would have to be elevated?  

My hope had been to find an alternate medication that might not have this side effect, but I’m uncertain if the zyprexa is at the root of this, though the condition has definitely worsened while I’ve been on it.  FYI, I am 40 years old, 5’10” and about 180 lbs.  I have  lost a lot of weight in my midsection, but my chest doesn’t seem much improved.  

I’m not prepared financially or emotionally for surgery, but if I were - would I expect the situation to recur after surgery due to the meds I’m on?

Thanks in advance for your help.