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Optical diagnosis by near-focus versus normal-focus narrow band imaging colonoscopy in colorectal polyps based on combined NICE and WASP classification: a randomized controlled trial
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Nisa Netinatsunton, Natcha Cheewasereechon, Tanawat Pattarapuntakul, Jaksin Sottisuporn, Kanet Kanjanapradit, Bancha Ovartlarnporn
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Clin Endosc 2022;55(5):645-654. Published online September 8, 2022
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DOI: https://doi.org/10.5946/ce.2022.048
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 Abstract
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- Background
/Aims: Narrow Band Imaging (NBI) International Colorectal Endoscopic (NICE) and Workgroup Serrated Polyps and Polyposis (WASP) classifications were developed for optical diagnosis of neoplastic and sessile serrated polyps, respectively. Near-focus NBI with NICE combined with WASP criteria for optical diagnosis of colonic polyps has not yet been evaluated. We aimed to compare the accuracy of near-focus NBI (group A) with normal-focus NBI (group B) in real-time optical diagnosis of colorectal polyps using combined NICE and WASP criteria.
Methods
Among 362 patients, 118 with 227 polyps were recruited. Groups A and B included 62 patients with 130 polyps (three lost polyps) and 56 patients with 106 polyps (six lost polyps), respectively. Optical diagnoses were compared with pathological reports.
Results
The accuracy of optical diagnosis of neoplastic polyps in groups A and B was not significantly different (76% vs. 71%, p=0.52). WASP criteria provided all false positive diagnoses of sessile polyps as serrated polyps in 31 (16.2%) patients.
Conclusions
Near-focus NBI was not superior to normal-focus NBI in optical diagnostics of neoplastic polyps using NICE criteria. In our study, WASP classification yielded all false positives in the diagnosis of sessile serrated adenomas/polyps. Routine real-life optical diagnosis of polyps is still unadvisable.
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Citations
Citations to this article as recorded by  - Colonoscopy Quality, Innovation, and the Assessment of New Technology
Sanjay R.V. Gadi, Sriya S. Muralidharan, Jeremy R. Glissen Brown
Techniques and Innovations in Gastrointestinal Endoscopy.2024; 26(2): 177. CrossRef - Endoscopic characteristics and performance of WASP classification in the diagnosis of colorectal sessile‐serrated lesions in Vietnamese patients
Nhu Thi Hanh Vu, Huy Minh Le, Diem Thi‐Ngoc Vo, Nhan Quang Le, Dung Dang Quy Ho, Duc Trong Quach
JGH Open.2024;[Epub] CrossRef - Classification and endoscopic diagnosis of colorectal polyps
Ji Hyun Kim, Sung Chul Park
Journal of the Korean Medical Association.2023; 66(11): 633. CrossRef - Understanding colorectal polyps to prevent colorectal cancer
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Journal of the Korean Medical Association.2023; 66(11): 626. CrossRef - AI-powered medical devices for practical clinicians including the diagnosis of colorectal polyps
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Journal of the Korean Medical Association.2023; 66(11): 658. CrossRef - Detecting colorectal lesions with image-enhanced endoscopy: an updated review from clinical trials
Mizuki Nagai, Sho Suzuki, Yohei Minato, Fumiaki Ishibashi, Kentaro Mochida, Ken Ohata, Tetsuo Morishita
Clinical Endoscopy.2023; 56(5): 553. CrossRef
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