Year 2019 / Volume 111 / Number 8
Original
Relationship between the polyp detection rate and the post-colonoscopy colorectal cancer rate

598-602

DOI: 10.17235/reed.2019.5889/2018

Violeta María Sastre Lozano, Senador Morán Sánchez, José García Solano, Pablo Conesa Zamora, Guadalupe Ruiz Merino,

Abstract
Aim: the adenoma detection rate is the quality indicator of colonoscopy that is most closely related to the development of interval colorectal cancer or post-colonoscopy colorectal cancer. However, the recording of this indicator in different units of gastrointestinal endoscopy is obstructed due to the large consumption of resources required for its calculation. Several alternatives have been proposed, such as the polyp detection rate. The objective of this study was to evaluate the relationship between the polyp detection rate and its influence on post-colonoscopy colorectal cancer rate. Patients and methods: in this study, 12,482 colonoscopies conducted by 14 endoscopists were analyzed. The polyp detection rate was calculated for each endoscopist. Endoscopists were grouped into quartiles (Q1, Q2, Q3, and Q4), from lowest to highest polyp detection rate, in order to evaluate whether there were any differences in the development of post-colonoscopy colorectal cancer. Results: the lowest polyp detection rate was 20.66% and the highest was 52.16%, with a median of 32.78 and a standard deviation of ± 8.54. A strong and positive association between polyp endoscopy diagnosis and adenoma histopathology result was observed and a linear regression was performed. A significantly higher post-colonoscopy colorectal cancer rate was observed in the group of endoscopists with a lower polyp detection rate (p < 0.02). Conclusion: polyp detection rate is a valuable quality indicator of colonoscopy and its calculation is much simpler than that of the adenoma detection rate. In our study, the prevalence of post-colonoscopy colorectal cancer was inversely and significantly related to the endoscopists’ polyp detection rate.
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Sastre Lozano V, Morán Sánchez S, García Solano J, Conesa Zamora P, Ruiz Merino G. Relationship between the polyp detection rate and the post-colonoscopy colorectal cancer rate. 5889/2018


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Publication history

Received: 28/08/2018

Accepted: 04/02/2019

Online First: 13/06/2019

Published: 31/07/2019

Article revision time: 154 days

Article Online First time: 289 days

Article editing time: 337 days


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