I was diagnosed with breast cancer in Feb. 1999, I had a lumpectomy, radiation, and am currently on Tamoxifen. In January of this year I had a suspicious area under the scar and had another biopsy that was negative. Last week I had another mammogram that showed another suspicious area under the scar. My surgeon felt sure it was a cyst and aspirated it and then sent me for another mammogram that day. The radiologist said the area had gone down but still looked suspicious. My surgeon still feels that this is a benign area but I'm concerned that something else may be going on under the scar. I made them send off the fluid that was aspirated to the lab for further studies and have not received the results. But, I am still not comfortable with letting this go. Is it possible that this cyst could be cancer? Has anyone else heard of this?