Endoscopy, Table of Contents Endoscopy 2013; 45(01): 73DOI: 10.1055/s-0032-1325772 Letters to the editor © Georg Thieme Verlag KG Stuttgart · New York Monitoring colonoscopy withdrawal times remains important M. D. Rutter , A. Chilton , J. Patnick Recommend Article Abstract Buy Article Full Text References References 1 Moritz V, Bretthauer M, Ruud HK et al. Withdrawal time as a quality indicator for colonoscopy – a nationwide analysis. Endoscopy 2012; 44: 476-481 2 Chilton A, Rutter M. Quality assurance guidelines for colonoscopy. NHS BCSP Publication No 6. Sheffield, UK: NHS Cancer Screening Programmes. 2.10, p. 9 Available at: 2011 http://www.cancerscreening.nhs.uk/bowel/publications/nhsbcsp06.pdf 3 Taber A, Romagnuolo J. Effect of simply recording colonoscopy withdrawal time on polyp and adenoma detection rates. Gastrointest Endosc 2010; 71: 782-786 4 Gellad ZF, Weiss DG, Ahnen DJ et al. Colonoscopy withdrawal time and risk of neoplasia at 5 years: results from VA Cooperative Studies Program 380. Am J Gastroenterol 2010; 105: 1746-1752 5 Lee TJW, Blanks RG, Rees CJ. , on behalf of Northern Region Endoscopy Group (NREG) et al. Colonoscopy withdrawal time and adenoma detection rate in screening colonoscopy: the optimum average withdrawal time is 10 min. Gut 2011; 60 (Suppl. 01) A44