A UC patient in his 40s was revisited to our department due to bloody stools. So, colonoscopy was performed to find out his UC condition. He detected an elevated lesion in the cecum that did not see six months ago. A biopsy revealed adenocarcinoma, and operation was performed. The distinction between CAC and SA has a significant effect on the treatment and subsequent quality of life. We reported on these distinguishing points including a review of the literature.
