@Hendrix my radiated boob post radiation was bigger like @Payne. That lasted for probably twelve months or more. The hardness, soreness comes and goes.Thats fluid. I can never ever lay on it. I had radiation October 2015. It now acts like a premenstrual boob, swells with fluid whenever it wants to, I'm post menopausal! I have recently noticed that it is smaller than the non radiated boob by maybe 1/4 of a cup size. But I put that down to weight gain over Xmas. The good boob got bigger not the annoying boob! So it's only with me starring in the mirror comparing not the general public that it's noticeable. WHEN I loose this weight I imagine they will match in size again. Hope that helps Janine xo