%0 Journal Article
%A Zhan, Tianzuo
%A Hahn, Felix
%A Hielscher, Thomas
%A Betge, Johannes
%A Kähler, Georg
%A Ebert, Matthias P
%A Belle, Sebastian
%T Frequent co-occurrence of high-grade dysplasia in large flat colonic polyps (</td><td width="150">
%T gt;20 mm) and synchronous polyps.
%J BMC gastroenterology
%V 15
%N 1
%@ 1471-230X
%C London
%I BioMed Central
%M DKFZ-2017-03869
%P 82
%D 2015
%X Large colonic polyps are associated with advanced dysplasia, but prevalence and characteristics of synchronous polyps in patients with large flat colonic polyps are poorly investigated. This study aims to characterize clinicopathological features of large flat colonic polyps and their impact on occurrence and characteristics of synchronous polyps.A total of 802 patients that underwent endoscopic mucosal resection (EMR) of flat colonic polyps >20 mm from 2003 to 2014 in an academic endoscopy unit were retrospectively analyzed for size, location and histology of large polyps and synchronous polyps.Average size of large polyps was 34.1 mm (range 20-150 mm, standard deviation 16.1 mm). Histology included 52.5 
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:26160557
%2 pmc:PMC4498525
%R 10.1186/s12876-015-0312-4
%U https://inrepo02.dkfz.de/record/127847