Is forceps more useful than visualization for measurement of colon polyp size?

作     者：Jae Hyun Kim Seun Ja Park Jong Hoon Lee Tae Oh Kim Hyun Jin Kim Hyung Wook Kim Sang Heon Lee Dong Hoon Baek 

作者机构：Department of Gastroenterology Kosin University College of Medicine Busan 602-702 South Korea Department of Gastroenterology Dong-A University College of Medicine Busan 602-702 South Korea Department of Gastroenterology Haeundae Paik Hospital Inje University College of Medicine Busan 602-702 South Korea Department of Gastroenterology Gyeongsang National University Hospital Jinju 660-702 South Korea Department of Gastroenterology Pusan National University Yangsan Hospital Yangsan 626-770 South Korea Department of Gastroenterology Inje University Busan Paik Hospital Inje University College of Medicine Busan 602-702 South Korea Department of Gastroenterology Pusan National University School of Medicine Busan 602-702 South Korea 

出 版 物：《World Journal of Gastroenterology》 (世界胃肠病学杂志（英文版）)

年 卷 期：2016年第22卷第11期

页      面：3220-3226页

核心收录：

学科分类：1002[医学-临床医学] 10[医学] 

主　　题：Colon polyp Colonoscopy Measurement Endoscopy 

摘      要：AIM: To identify whether the forceps estimation is more useful than visual estimation in the measurement of colon polyp size.METHODS: We recorded colonoscopy video clips that included scenes visualizing the polyp and scenes using open biopsy forceps in association with the polyp, which were used for an exam. A total of 40 endoscopists from the Busan Ulsan Gyeongnam Intestinal Study Group Society(BIGS) participated in this study. Participants watched 40 pairs of video clips of the scenes for visual estimation and forceps estimation, and wrote down the estimated polyp size on the exam paper. When analyzing the results of the exam, we assessed interobserver differences, diagnostic accuracy, and error range in the measurement of the polyp size.R E S U LT S : The overall intra-class correlation coefficients(ICC) of inter-observer agreement for forceps estimation and visual estimation were 0.804(95%CI: 0.731-0.873, P 0.001) and 0.743(95%CI: 0.656-0.828, P 0.001), respectively. The ICCs of each group for forceps estimation were higher than those for visual estimation(Beginner group, 0.761 vs 0.693; Expert group, 0.887 vs 0.840, respectively). The overall diagnostic accuracy for visual estimation was 0.639 and for forceps estimation was 0.754(P 0.001). In the beginner group and the expert group, the diagnostic accuracy for the forceps estimation was significantly higher than that of the visual estimation(Beginner group, 0.734 vs 0.613, P 0.001; Expert group, 0.784 vs 0.680, P 0.001, respectively). The overall error range for visual estimation and forceps estimation were 1.48 ± 1.18 and 1.20 ± 1.10, respectively(P 0.001). The error ranges of each group for forceps estimation were significantly smaller than those for visual estimation(Beginner group, 1.38 ± 1.08 vs 1.68 ± 1.30, P 0.001; Expert group, 1.12 ± 1.11 vs 1.42 ± 1.11, P 0.001, respectively).CONCLUSION: Application of the open biopsy forceps method when measuring colon polyp size could help reduce inter-observer differences and error rates.