On: Cancer death rates are falling, five-year survival...

[xyzzyz]

You can't know, but that doesn't mean that you're completely in the dark. The doctors can provide you with estimates regarding the chances having decent 20 years.

[TaupeRanger → xyzzyz]

Of course. If you're going through radiation and chemo there's a good chance the Drs think it has a good chance of helping. Not always though.