breast cancer-size

I was just curious if breast cancer statistics have any tendencies to be more common in different types and sizes of women, or even men. Does breast cancer occur more often in big breasted people? o and does muscle have anything to do with it. I know some guys who have big chests, but are solid muscle, and guys with big chests that have very little muscle. Then obviously, some girls have way bigger breasts than other girls. so yeah... just a thought.