Hi, I am not a doctor..but I think by incurable they mean that they can't take it all away & cure you.
However they can treat you to prolong your life. My cousin has had terminal ovarian cancer for many years, but has had treatments & operations along the way, the hope is it stays away from vital organs. Never give up hope, my aunt was given 2mths to live with her cancer 25yrs ago, she is still strong after many opps. I wish you all the best of luck.