i had breast cancer 15 1/2 years ago and a radical mastectomy (14 lymph nodes removed) - I am on hormone therapy and had chemo & radiation at the time of diagnosis. Now, recently, I have been experiencing an extremely itchy chest where the mastectomy was performed and from scratching have slight sores and redness. If I leave it alone it goes away but returns in about 2 weeks, again extremely itchy. I went for an exam and my doctor wants me to go for a biopsy to play it safe. Could this be a return of the cancer and if so, how aggressive might it be.