I just had a colonoscopy, my fifth overall, and found the only possible reason for blood in my stools was an area of friability in my cecum, at the anastomosis site from my surgery in 2010. I had no idea what friability was, but my GI told me yesterday. What I have found on the web is it is a brittle area where, if it is touched swells up and bleeds. Has anyone else had this happen?