Has anyone started reconstruction and have cancer?

I was in the process of getting reconstrution when my cancer is back. I have the expanders in bilateral. The breast cancer has return in my neck, clavical and in the skin. This is a terrible set back. The onc. doc doesn't want me to have the expanders removed for fear of my cancer getting into the blood stream. They are painful now that the cancer has gotten in my skin of my chest. Has this happened to anyone? What did your doctor do? Thanks.