i found a lump in my left breat a year ago,I had a scan and they said it was just compressed fat cells,and not malignant.I recently noticed that the same breast that it itches inside, under the skin, and the shape and texture of the aureole has changed, and the skin has darkened.Should I be worried?Is this cancer? My sister was diagnosed with breats canbcer when she wa 26, she had 2 lumpectomy s and was on kimo, and has survived.She is 41 now, but i am always worried. Can you advise?