This is a very high-level response, but in my view those broad survival percentages are not generally helpful. There are many reasons: (1) They are based on old stats, and care is improving all the time; (2) as I think you’ve realized, the variables are numerous — examples are CEA and other markers, genetic profile, response to chemo, how much/what scans and monitoring are done, general health, nutrition, exercise, lifestyle, skill and attentiveness of the surgeon/oncologists, even potentially stress and psychological state — the list goes on.
My way of looking at it is: If you want to dive *deeply* into your own unique situation, read and process hundreds of research papers on all the variables in your unique situation, you can, and you may in the end be able to calculate a reasonable survival number (but still based on the past not the future, which matters). Or you can take solace in the fact that your current situation is quite good, better than many, and you have a very good chance of walking away, if you determine and do the right things and devote yourself to a cure. Either way is valid, depending on personality, resources, and time.
Concern about what an oncologist says about a specific survival percentage without hyper focus on unique circumstances, (and while we might want to think they do the deep dive for every patient, that simply is not realistic), while understandable, is not IMO productive. Choose your preferred approach (super detailed analysis v. informed but high level “gestalt”), and go with that. Or so say I. Good luck!
7/19: Rectal cancer: Initially staged as IIIA, T2N1M0
Initially approx 4.25 cm, low/mid rectum, mod. well diff. adenocarcinoma
8/22 -10/14 4 rounds FOLFOX neoadjuvant, 3 w/Oxiplatin (lots of side effects/reduced size est. 70-75%)
Switched to neoadjuvant chemorad in 11/19 (Xeloda and approx. IMRT, 60 Gy, 33 fractions)
Trying to achieve cCR.