My 72 year old mum was diagnosed with stage 4 kidney cancer that had also spread to her liver on 22nd April 2020, the cancer was too big to operate on. She's had a terrible time taking Pazopanib and after a 2nd hospital admission for sickness (her weight dropped to 6 stone from 8) she's now decided she no longer wishes to take any further treatment as she felt she didn't have quality of life on Pazopanib. It's been 5 weeks with no treatment and now she's started to feel really tired, shortness of breath and heart palpitations. We have a district nurse attend daily to give her blood thinning injections and I'm concerned the cancer may have spread to the lungs. I'm scared that she's fading away infront of me.

If someone is stage 4 and not taking any treatment what is the prognosis?