Yes, I have a pouch 30 years old and scattered, irregular ulcerations were spotted in my lower neoterminal ileum after 15 years (in about 2007) and attributed to backsplash stool due to the irregular pattern of inflammation and the placement of the ulcerations- although that diagnosis wasn't certain. Perhaps corroborating the diagnosis is that my inflammation at the J Pouch inlet has worsened in the last 15 years and I was dilated 3 times in late 2021 and early 2022. I have recently revisited the issue with my GI and he told me recent science and analysis is that it is NOT CROHN's DISEASE. Instead it is a new as yet unidentified or unnamed inflammatory bowel disease process caused by autoimmune disorder that surgery does not and was not ever intended to cure. So in that sense, it isn't really a surprise.
The key issue is how to treat it. My GI says that treatment is all the other modalities that are and have been used, because at this point the new and as yet unidentified disease has baffled experts as to what is causing it. But it's not thought to have been "it's Crohn's and they got the diagnosis wrong." That thinking has gone out the window like so much stale bathwater. And it's kind of pointless thinking anyway,!because regardless of what you call it, you have it and need to treat it. It's inflammation.
Jacqueline- your timeline of the condition appearing is same as mine- 15 years. It's a lot of backsplashing happening in that period. 8 stools a day, 365 a year, 15 years. 43,800 stools is a SHITLOAD of stool. LOL.😁
By the way, the 3 of us posters in this thread are by far not the only 15 plus year Pouch patients who have posted about ulcerations being discovered in the ileum long after surgery. It's kind of common sense that Crohn's didn't start 15 years after surgery if "you always had it." But you didn't always have it. Much like the thinking that the Earth was flat eventually got dismissed, after being "established science" until 1500 or so, so are we evolving in our thinking about bowel disease. It's a new disease process. If you want to think of names for it you can. But Crohn's isn't it.