Hi, I'm am 52 years old ,my left clavical is swollen and I noticed it being swollen for almost two years now. I have had a CT scan ,CT scan was not very dense so they couldn't tell what the problem was. I'm a little worried I also feel pressure behind my breast plate, feels like maybe a lump or something .I also Have a large cyst on my shoulder in the back part of the joint. the last two years have had abnormal mammograms ,first year had biopsy on my left breast for calcification clusters, and this year right side same thing. but just had a magnification mammogram done.