The report does describe evidence of pouchitis, which you probably already knew. The prostate information sounds like irrelevant noise you should pay no attention to, IMO. It's almost certainly of no importance, and you have much bigger things to address than focusing on an incidental finding like that.
Here's an example: A few years ago I had a chest CT scan for a problem that eventually turned out to be asthma. The bottom of the CT scan happened to capture the tops of my kidneys, and they saw a mass as an "incidental finding" (something they weren't looking for). Based on the way it looked on CT it was deemed "suspicious," and I went on to have kidney surgery to remove what looked like a serious cancer. After the surgery, the pathologist reported that the mass was completely benign. The surgery was the best choice once they knew about the mass, but in this case I would have been better off if they had never seen it in the first place! Some incidental findings are important, but I don't think this prostate observation is one of them.