BACKGROUND: There are limited studies on incidence rates of metachronous @entity1313 after resecting large @entity1127 . In this study, we analyzed @entity75 after endoscopic resection of @entity1127 >= 20   mm in size. METHODS: We retrospectively analyzed consecutive @entity1 who underwent an endoscopic resection of @entity1127 from 2006 to 2013 at two affiliated hospitals. All @entity1 underwent at least two total colonoscopy before follow-up to ensure minimal missed @entity1127 . Only @entity1 who had follow-up colonoscopy annually after resection were recruited for the analysis. We separated the @entity1 according to the size of the polyp resected; there were 239 @entity1 in the >= 20   mm group and 330 @entity1 in the <20   mm group. Clinical characteristics and cumulative rates of metachronous advanced @entity652 and @entity5 in both groups were analyzed. Advanced @entity652 was defined as a neoplastic lesion >= 10   mm in size and @entity652 with a villous component RESULTS: The cumulative rate of development of metachronous advanced @entity652 and @entity5 in the >= 20   mm group was significantly higher than the <20   mm group (22.9% vs 9.5%, P<0.001) at 36   month. There was also more development of small @entity1127 5-9   mm in the >= 20   mm group than the <20   mm group (45.2% vs 28.8%, P<0.001). With respect to @entity75 , there were more right-sided colonic lesions in the >= 20   mm group than the <20   mm group (78.8% vs 50.0%, P=0.015). CONCLUSIONS: High incidence rates of development of metachronous @entity1313 were detected after resection of @entity1127 >= 20   mm in size. (UMIN000013772). This article is protected by copyright. All rights reserved.

High incidence of metachronous advanced @entity652 and XXXX after endoscopic resection of colon polyps larger than or equal to 20   mm in size.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity1127 :: ('MESH:D011127', 'Disease') :: ['colorectal polyps', 'polyps'] @entity1313 :: ('MESH:D001932', 'Disease') :: ['neoplastic lesions'] @entity75 :: ('MESH:D001927', 'Disease') :: ['metachronous lesions'] @entity5 :: ('MESH:D009369', 'Disease') :: ['cancer'] @entity652 :: ('MESH:D000236', 'Disease') :: ['adenoma']
@entity5 :: (MESH:D009369,Disease) :: ['cancer']
