PCD is a paraneoplastic ieruolognc disorder that some people who have cancer develop, in which your body creates an antibody that can cure the cancer (Hooray!) but the antibody chews through the blood brain barrier and f**ks with your cerebellum over the course of a few months. So, yeah, the cancer may go away, but the antibody your own body created is going to kill you in a much more horrifying way now.And scientists are going to want to study every detail of your imminent death (but not actually cure you) to try to find the cure for cancer (that may have the side affect of eating your brain, but whatever).