Which is a recognized long-term risk after ileal pouch-anal anastomosis in ulcerative colitis?

• A. Pouchitis and changes in stool frequency
• B. Kidney stones exclusively
• C. No risk of any complication
• D. Always cancer development

Answer: (B)

After ileal pouch-anal anastomosis, a known long-term risk to watch for is kidney stones. The pouch can cause fat malabsorption, which frees up oxalate in the gut. Calcium then binds fat instead of oxalate, so more oxalate is absorbed into the bloodstream and excreted in the urine. This hyperoxaluria, especially in the context of ongoing diarrhea and dehydration, raises the likelihood of calcium oxalate kidney stones over time.

Understanding this helps: while pouchitis and changes in stool frequency are also common issues after IPAA, kidney stone formation is a well-recognized long-term metabolic risk due to the altered digestion and absorption there. Managing includes staying well hydrated, consuming calcium with meals to help bind oxalate, and limiting high-oxalate foods as appropriate, along with monitoring for any urinary symptoms or stone risk factors.