It seems weird that they don't have it more together on explaining the radiation treatment process. I did not have to hold my breath - not sure why, but was told it wasn't necessary. On the other hand, despite being comfortably positioned, some of the treatments took so long that my arms fell asleep and I wasn't allowed to move them. I also wish I had known ahead of time that the marker used for the simulation would rub off on my clothing. I would have worn a black bra and top. Also, I was allergic to the little stickers they put on during the simulation. I got a bad rash, so I had to take them off and then keep marking the spots with a magic marker until they could do the tattoos. I could have told them I have sensitive skin and might have a reaction, but no one bothered to even tell me I would get stickers until they were sticking them on. All that said, everyone was pretty nice and I would still prefer lumpectomy and radiation to a mastectomy, especially since my tumor was so small - 2 mm. I am glad I still have most of my breast, including my nipple, and still have sensation on that side.