446 High Definition White Light Endoscopy (Hdwle) Versus High Definition With Chromoendoscopy (Hdce) in the Detection of Dysplasia in Long Standing Ulcerative Colitis: a Randomized Controlled Trial

Patients with ulcerative colitis (UC) have an increased risk for colorectal cancer (CRC) compared to the general population. The yield of surveillance can be improved by addition of newer endoscopic methods that enhance the detection of subtle mucosal abnormalities like chromoendoscopy (CE)1 and HDWLE when compared to standard definition endoscopy. CE however is still not widely adopted and no studies have compared HDCE and HDWLE. Aims: To compare the rate of detection of dysplasia in patients with long standing UC with HDWLE compared to high definition with CE (HDCE).