My mother has had two of them recently. The first one they found a polyp and they snipped it out of her. They take pictures of your colon and they give you the highlights. The ones they gave my mother were before and after pics of her polyp.
Her second one was done because she started having bloody diarrhea while she was in the hospital being treated for a severe bladder infection. They found an irritated spot in her colon. They decided all she needed was more antibiotics.