I am 38 years old. I found a lump in my breast and had a lumpectomy in July 08. It was Stage 2 cancer that was the size of a ping pong ball. I had four cycles of chemo and am now doing radiation. Recently I had a MRI core guided biospy on the other side which showed up as "atypical ductal hyperplasia, focal". I was told that this is precancerous spot that I need to have a lumpectomy to remove it. Has anyone else had spots show up on the other side especially after the chemo, that need removed? My other question is about Tamoxifin...what if I didn't take it?