Hi,
I had obstruction-like symptoms last fall and after a CT and 2 pouch scopes they finally found 6 stones in my pouch. Dr Shen my GI (@Cleveland Clinic) was unable to remove them during the endoscopy. He told me I was his 9th case of pouch stones though 5 of them were actually in j-pouches and most had to be removed surgically.
He actually referred me to a surgical-urologist who specialized in stones (gallblader, bladder and kidney) and he agreed to try their equipment and methods on me. Went in through my stoma and used a pneumatic type device to break up any stones that were too big to come out on their own.
It was done in the OR under a general and I did spend one night in the hospital for observation, but all has been well since then.
I did wait 2 months between discovery of the stones and having them out since i was in school, but I was pretty much on a liquid and GI soft diet to prevent any obstruction because the way my pouch is built the stones ended up collecting around the entry of the small intestine to the pouch.
Dr Shen said he's not sure why they form or what causes them and said there was no evidence to suggest that I need to make any long term dietary alterations however, since its so rare I doubt any studies have been done.
so maybe if you can find a urological stone specialist he might be able to fish them out for you!
Here is a link to my blog and I had uploaded 2 pics one from the scope and the other the stones are out and on a tissue - if its of any interest.
http://carpekat.blogspot.com/2011_12_01_archive.htmlgood luck!
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katie