My 18 year old son had J pouch surgery for FAP in January. He had thousands of polyps. He lost his colon and all of his rectum. He currently has an ileostomy, which at the time of surgery we were devastated about. He has done well with it. I was told before the surgery to ensure that the ostomy is placed in the correct location. That meant nothing to me, and we did not think he was going to have one. His ileostomy is placed right where his body bends. This causes the actual bag to bend and causes leaks. On dates. Kids move and bend more than adults. Make them measure your kids.
My son has had no problems with pain. He was in the hospital for 11 days because his new plumbing was a little confused. He's looking forward to getting rid of the ostomy. He misses hiding out in the bathroom during dishes time.