It's not cancer. Apparently they found nothing suspicious in the MRI or Cat scan. After lots more prodding and poking they have decided that it is radiation burning from the radiotherapy he had for the prostate cancer.*
So yes, while this is horrid, painful and life-limiting, it isn't life-threatening.
Thank you Universe, for listening to me and not hitting us with this.
*Scroll down if you want the painful details.*
The insides of his rectum and colon are burnt and raw. So you can imagine the pain he is in. But at least it won't kill him.
