30yrs old......I found a lump in my left breast around the end of Feb/2010. Didnt worry to much because i know the first thing the MD will say is wait until you have your cycle and if it's still there come back. So i waited 2 months it was still there. My MD sent me for an US and the radiologist said that the lump is a lymph node and that's common. Really? Never heard of that one. So as she continues with the exam she finds another lump that i couldnt feel....WOW glad i had the US done. I had the lump biopsied and it came back benign but now i'm worried about this enlarged lymph node that wasn't there on my annual exam in Jan/2010. What could be making this lymph node enlarged?????? I'm very confused. Very thankful for any resources/advice on the subject. Thanks All!