Curbside Consultation in Endoscopy: 49 Clinical Questions, Second Edition

Joseph Leung, MD; Simon Lo, MD

Question 17: Which Of My Patients With Ulcerative Colitis Need “Surveillance” Colonoscopy? How Should The Procedure Be Performed? (continued)

Francis A. Farraye, MD, MSc; Michael F. Picco, MD, PhD

Patients with long-standing ulcerative colitis (UC) are at an increased risk for developing dysplasia and colorectal carcinoma (CRC). This risk approaches 8% by 20 years and 18% by 30 years.1 Recent data suggest that the risk of CRC in patients with UC may be lower than previously reported.2 Patients with extensive Crohn’s colitis also have an increased risk of CRC and should undergo regular surveillance.3 At present, despite a lack of evidence from randomized controlled trials, surveillance colonoscopy is the best and most widely used method to detect dysplasia and…