Almost a century ago, Crohn and Rosenberg described the first case of ulcerative colitis (UC) complicated by colorectal carcinoma (CRC). [1] Nowadays, it is widely recognised that patients with colonic inflammatory bowel disease (IBD), including UC and Crohn's disease (CD), are at increased risk of CRC and therefore these patients are enrolled in surveillance programs. [2-8] Endoscopic surveillance aims to detect and remove precursor lesions or early-stage CRC, and has been linked to a decreased risk of CRC and corresponding mortality based on retrospective data.
