Sibelsue,
The very few long term stats that I have uncovered (longer than 5 years in the future) are in relation to very specific
long term minutely defined treatment protocols. Even then disclosure is limited to average disease free survival, and average overall survival - neither of which is predictive for an individual.
His doctor's evaluation of his overall AND cancer-specific situation will be more important than any published study.
On the positive side, Dr. Lamm has made the observation, "The longer the time to the first recurrence, the greater the likelihood of long term survival".
Best to you both,
Jack