Would you include the entire bladder in the treatment field of a patient with a history of T1 bladder cancer s/p intravesical therapy who is now being planned for chemoradiation for a T3N1 rectal cancer?

No, I would NOT include the entire bladder in the treatment field.

The major driving factor for his survivorship will be rectal cancer (instead of bladder cancer) in his case. Given that his superficial bladder cancer is relapse-free for 2 years, his outlook from a bladder cancer perspective is favo...

I would not change the volume based on a prior history of early-stage bladder cancer.