Hello, im just new to the discussion. But I want to share you what I've been through lately. I felt a solid mass on my right breast but it seems like it is attached to my ribcage not on my breast tissue. I felt I also have this kind of lump on my left breast but it is a bit large on my right. I went through a mammogram and sonomammography but the results told me it is just a lymph nodes. I was not contented on the result so I went through another mammogram and sonomammography and Im just waiting for the result. I am expecting that the result would tell that it is swollen lymph nodes. Sometimes theres pain, sometimes I can really feel and sometimes its the same size as my left breast. I hope you can share me if you happen to experience the same as mine.