Hi I have a lump behind my nipple on my left breast, it’s been there a couple of years, I did have a mammogram and was told it is a cyst, nothing can be done as it is attached right behind the nipple, over the past few weeks I have noticed a change as my nipple has become dry and flaky and there is a red spot (pimple) that has appeared now I have a milky green discharge from this, should I be concerned?
thank you in advance