I checked with dr. and she said she does not know what it is. There are two of them; one is larger than the other and they are on the seam of my breast to my chest. She offered to do a biopsy which would leave an inch long incision scar on under the fold of my breast. I cancelled as it was scheduled close to me leaving for christmas. I must admit I am afraid...she wasn't overly concerned and told me she had to do a biopsy to be sure. I thought perhaps it is the underwire on my bra antagonizing a cyst which is now bigger and there of two. Does this sound cancerous...should I do the biopsy. As old as I am and as mature as I think I am...I am afraid to hear something negative. Thanks. Please respond if this sounds like a familiar scenario to you.