e15141 Background: In terms of frequency, colorectal cancer (CRC) is the 3rd cancer in Lebanon with 1093 incidences registered in 2015. To this date not a single screening campaign has been organized in the country. Fecal immunochemical test (FIT) is an advised screening technique. We found it useful to organize a screening campaign using FIT to determine the prevalence of CRC in a population of 3000 healthy Lebanese allowing the extraction of useful data. Methods: 3000 tubes were distributed to Lebanese adults (45-80 years old) at average risk of developing CRC, followed by explanations. FIT analysis was done at the medical genetics unit (UGM) of Saint-Joseph University and patients with positive FIT were asked to undergo further investigations. Results: Out of the 3000 distributed tests, 705 were returned (23.5%) with 459 fully analyzable. The age median was 56 (45-80). Sex ratio F/M 2.3. Out of the 459 patients, 278 (60.5%) showed 0ng/ml, 137 (29.8%) showed 1-79ng/ml, 3 (0.6%) showed 80-99ng/ml (intermediate risk values), 33 (7.1%) showed 100-800ng/ml considered as a positive value and finally 8 (1.7%) showed over range values. Among the 44 positive patients we contacted 41. Out of the 8 (18%) colonoscopies results received: 5 showed hemorrhoids leading to false positive, 1 ulcerative ileitis, 1 tubular adenomas and 1 carcinoma. Conclusions: While it was hard for us to quantify people for whom a free FIT was proposed, the low restitution rate among those who took the test shows the necessity of national screening and sensitization campaigns.
538 The Association of Cecal Withdrawal Time With Adenoma Detection Rate (ADR) and Sessile Serrated Adenoma/Polyp Detection Rate (SDR) in Average Risk Screening Colonoscopies
