Hello and welcome to the community. We're sorry you have to ask this question and are having these concerns but we will try to help. Colonoscopies are important to have to detect colon cancer or precancer but anal cancer is diagnosed a bit differently. https://www.mayoclinic.org/diseases-conditions/anal-cancer/diagnosis-treatment/drc-20354146 You can copy and past this article into your browser and it opens a page that discusses the diagnostic procedure for anal cancer. The first thing that is done is a physical and visual examination. A doctor will glove up and physically inspect the anal cavity for any abnormalities as well as visually inspect it. If there is still concern, they can order an ultrasound or sound wave test. And lastly, they may order a biopsy of something suspicious. I think if your doctor as beginning the colonscopy saw something suspicious, they'd note it and mention it to you. Having celiac disease does put you at a greater risk for inflammatory bowel disease which is often associated with rectal bleeding. I personally would not think this is anal cancer at this point but if you have never asked specifically about being checked through examination for anal cancer, I'd go ahead and do it this year. And yes, if nothing has changed in 8 years, that is a good sign.