If you any reason to believe you have inflamation due to Breast Cancer then you should be seeing a doctor ASAP rather than writing here. My first husband was a Ob/gyn and my daughter is a nurse, I work with women alcoholics for over 20 years, most have a high rate of cervical, uterine and breast cancer. I don't think cancer based on itch. Inflamantion, lumps, bumps, discharge, pain etc. then that would be my first choice of doctors. You only said itch. If you have a concern, call now.