Linked color imaging improves the visibility of colorectal polyps: a video study

• Published in: Endoscopy International Open 2017-06, Vol.5 (6), p.E518-E525
• Main Authors: Yoshida, Naohisa, Naito, Yuji, Murakami, Takaaki, Hirose, Ryohei, Ogiso, Kiyoshi, Inada, Yutaka, Dohi, Osamu, Kamada, Kazuhiro, Uchiyama, Kazuhiko, Handa, Osamu, Konishi, Hideyuki, Siah, Kewin Tien Ho, Yagi, Nobuaki, Fujita, Yasuko, Kishimoto, Mitsuo, Yanagisawa, Akio, Itoh, Yoshito
• Format: Article
• Language: English
• Subjects: Original article
• ISSN: 2364-3722; 2196-9736
• DOI: 10.1055/s-0043-105495

Abstract Background/study aim  Linked color imaging (LCI) by a laser endoscope (Fujifilm Co, Tokyo, Japan) is a novel narrow band light observation. In this study, we aimed to investigate whether LCI could improve the visibility of colorectal polyps using endoscopic videos. Patients and methods  We prospectively recorded videos of consecutive polyps 2 – 20 mm in size diagnosed as neoplastic polyps. Three videos, white light (WL), blue laser imaging (BLI)-bright, and LCI, were recorded for each polyp by one expert. After excluding inappropriate videos, all videos were evaluated in random order by two experts and two non-experts according to a published polyp visibility score from four (excellent visibility) to one (poor visibility). Additionally, the relationship between polyp visibility scores in LCI and various clinical characteristics including location, size, histology, morphology, and preparation were analyzed compared to WL and BLI-bright. Results  We analyzed 101 colorectal polyps (94 neoplastic) in 66 patients (303 videos). The mean polyp size was 9.0 ± 8.1 mm and 54 polyps were non-polypoid. The mean polyp visibility scores for LCI (2.86 ± 1.08) were significantly higher than for WL and BLI-bright (2.53 ± 1.15, P