I don't think I can add anything on top of what Saracen has just said but pleased its no news. Long may that continue.
Survival estimates are a real problem with cancer. A friends father is just about coming to the end after 5 years battling having originally been told he had months. On the other side of the coin a friends 15 year old passed away recently due to childhood leukemia after just a year even though he was told he should survive it initially (that one hit me hard and I couldn't even visit the funeral the other day as we have COVID currently). Horrible horrible disease (not that any are pleasant). I hope/pray they are underestimating in your case spacein_vader.