I was diagnosed with Stage 4 renal cell cancer in Dec. 2006. They told me to get my "affairs in order". In January I began a 3-week radiation treatment for a tumor on my spine and after that my chemo treatment with Carboplatin and Gemzar for the actual kidney cancer. I'm still on the chemo and the tumor on the lining of my kidney is shrinking. It had spread to the lymph nodes outside the kidney and is gone now. I have a small spot on one of lungs that has also shrunk.
I would tell your sister to find a good oncologist and NOT give up! I thought I had "months" to live but the chemo is working for me. My oncologist will not give me a life expectancy but thinks we headed the right direction with the treatment because it is WORKING.
My prayers are with you and your sister!
Kitty