just dropped in on your discussion, be aware! I went for a colonoscopy and gastroscopy and a diverticulum in the duodenum burst when they put the air in. I had suffered a perforated diverticulum, which resulted in my having to have a major operation to repair the damage, I also had peritonitis from the feacal fluid leaking into the stomach, and was extremely unwell. I was in hospital for one month. I am still unfit to work after 7 months. I now have to have another operation to treat a large ventral hernia in April, and another six weeks before resuming work.