scholarly journals Additional value of linked color imaging in colonoscopy: a retrospective study

2019 ◽  
Vol 07 (11) ◽  
pp. E1448-E1454
Author(s):  
Taku Sakamoto ◽  
Yutaka Tomizawa ◽  
Hourin Cho ◽  
Hiroyuki Takamaru ◽  
Masau Sekiguchi ◽  
...  
Keyword(s):  
Imaging Modality ◽  
Colorectal Polyp ◽  
Proximal Colon ◽  
Polyp Detection ◽  
Color Imaging ◽  
Single Center Study ◽  
Linked Color Imaging ◽  
Additional Value ◽  
Withdrawal Phase ◽  
White Light Imaging

Abstract Background and study aims Linked color imaging (LCI), a newly developed optical modality, enhances mucosal surface contrast. We aimed to evaluate the efficacy and feasibility of insertion-phase LCI in terms of additional benefit of colorectal polyp detection over that obtained with white light imaging (WLI). Patients and methods We consecutively enrolled eligible patients from November 2017 to June 2018. During colonoscopy, LCI or WLI was alternatively applied on scope insertion and LCI was applied on scope withdrawal. Patients were divided into two groups according to the protocolized difference of imaging modality used in the scope insertion phase (LCI and WLI groups). Group differences in clinical outcomes were evaluated. Results A total of 138 patients were enrolled in this study, with equal numbers of patients assigned to the LCI and WLI groups. Most of the lesions located in the proximal colon were detected during the withdrawal phase, without a difference in proportions between the two groups. However, in the LCI group, eight of 49 lesions (16 %) located in the sigmoid and rectosigmoid colon were only detected during the insertion phase, and no such lesions (0 %) were detected during the insertion phase in the WLI group (P = 0.045). Conclusions This study showed the efficacy and feasibility of LCI in improving colorectal polyp detection in the sigmoid colon, especially during insertion. Further studies are warranted to validate the results of our single-center study.

scholarly journals Colon polyp detection using linked color imaging compared to white light imaging: Systematic review and meta‐analysis

2020 ◽  
Vol 32 (6) ◽  
pp. 874-881 ◽  
Author(s):  
Satoshi Shinozaki ◽  
Yasutoshi Kobayashi ◽  
Yoshikazu Hayashi ◽  
Hirotsugu Sakamoto ◽  
Keijiro Sunada ◽  
...  
Keyword(s):  
Systematic Review ◽  
White Light ◽  
Meta Analysis ◽  
Colon Polyp ◽  
Polyp Detection ◽  
Color Imaging ◽  
Linked Color Imaging ◽  
White Light Imaging

Linked color imaging versus narrow-band imaging for colorectal polyp detection: a prospective randomized tandem colonoscopy study

2020 ◽  
Vol 91 (1) ◽  
pp. 104-112.e5 ◽  
Author(s):  
Wai K. Leung ◽  
Chuan-guo Guo ◽  
Michael K.L. Ko ◽  
Elvis W.P. To ◽  
Lung Yi Mak ◽  
...  
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Colorectal Polyp ◽  
Polyp Detection ◽  
Color Imaging ◽  
Linked Color Imaging

scholarly journals 252 – A Prospective Randomized Tandem Colonoscopy Study of Linked Color Imaging Or Narrow Band Imaging for Detection of Colorectal Polyp

2019 ◽  
Vol 156 (6) ◽  
pp. S-46-S-47
Author(s):  
Wai Keung Leung ◽  
Chuan-Guo Guo ◽  
Kwan-Lung Michael Ko ◽  
Wai Pan E. To ◽  
Lung-Yi Mak ◽  
...  
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Colorectal Polyp ◽  
Color Imaging ◽  
Linked Color Imaging

scholarly journals Additional Thirty Seconds Observation with Linked Color Imaging Improves Detection of Missed Polyps in the Right-Sided Colon

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Naohisa Yoshida ◽  
Yutaka Inada ◽  
Ritsu Yasuda ◽  
Takaaki Murakami ◽  
Ryohei Hirose ◽  
...  
Keyword(s):  
Pilot Study ◽  
Detection Rate ◽  
Additional Observation ◽  
Ascending Colon ◽  
Sessile Serrated Adenoma ◽  
Serrated Adenoma ◽  
Color Imaging ◽  
Linked Color Imaging ◽  
The Right ◽  
White Light Imaging

Background and Aims. Missed polyps are a pitfall of colonoscopy. In this study, we analyzed the efficacy of an additional 30 seconds observation using linked color imaging (LCI) for detecting adenoma and sessile serrated adenoma/polyp (SSA/P). Materials and Methods. We enrolled patients undergoing colonoscopy from February to October 2017 in two institutions. In all patients, the cecum and ascending colon were observed with white light imaging (WLI) first. The colonoscope was inserted again, and the cecum and ascending colon were observed for an additional 30 seconds using either LCI or WLI. The method for the 30 sec observation was to insufflate the cecum and ascending colon sufficiently and observe them in a distant view, because the length of the second observation was determined to be precisely 30 sec. For the second observation, LCI was performed for the first 65 patients and WLI for the next 65. Adenoma and SSA/P detection rate (ASDR) in the second observation were examined in both groups. According to a pilot study, the sample size was estimated 65. Results. In the first observation, ASDR were 30.7% in the LCI group and 32.2% in the WLI group (p=0.85). For the second observation, 13 polyps were detected in the LCI group and 5 polyps in the WLI group (p=0.04). Additionally, ASDR for the second observation were 18.5% and 6.1%, respectively (p=0.03). There were no significant differences between the LCI and WLI groups with respect to morphology (ratio of polypoid) (38.5% versus 60.0%, p=0.52) and histology (ratio of adenoma) (92.3% versus 100.0%, p=0.91). Total adenoma and SSA/P number were 48 in the LCI group and 36 in the WLI group (p=0.02). Conclusion. The 30 seconds additional observation with LCI improved the detection of adenoma and SSA/P in the right-sided colon.

scholarly journals Linked Color Imaging Highlights Flat Early Gastric Cancer

2019 ◽  
Vol 13 (3) ◽  
pp. 532-538
Author(s):  
Kimitoshi Kubo ◽  
Noriko Kimura ◽  
Soichiro Matsuda ◽  
Momoko Tsuda ◽  
Mototsugu Kato
Keyword(s):  
Gastric Cancer ◽  
Early Gastric Cancer ◽  
Central Area ◽  
Anterior Wall ◽  
Tubular Adenocarcinoma ◽  
Lower Body ◽  
Color Imaging ◽  
Linked Color Imaging ◽  
Well Differentiated ◽  
White Light Imaging

While linked color imaging (LCI) may allow flat early gastric cancer to be detected early, the endoscopic and pathological features of lesions detected by LCI remain poorly described. Screening esophagogastroduodenoscopy performed on a 68-year-old woman revealed a yellowish, flat lesion shown to be reddish in its central area, located in the anterior wall of the gastric lower body on white light imaging (WLI). On LCI, the lesion was highlighted as an orangish, flat lesion shown to be purple-colored in its central area, surrounded by lavender-colored tissue. Endoscopic submucosal dissection performed led to the patient being diagnosed with tubular adenocarcinoma, well-differentiated type (tub1), pT1a (M). This case suggests that LCI may prove more useful than WLI for the detection of flat early gastric cancer lesions.

scholarly journals 492 COLORECTAL ADENOMA DETECTION BY COLONOSCOPY WITH LINKED COLOR IMAGING VERSUS WHITE LIGHT IMAGING: RANDOMIZED CONTROL STUDY

2020 ◽  
Vol 91 (6) ◽  
pp. AB44
Author(s):  
Kazuya Miyaguchi ◽  
Kaoru Takabayashi ◽  
Daisuke Saito ◽  
Yoshikazu Tsuzuki ◽  
Naoki Hosoe ◽  
...  
Keyword(s):  
Colorectal Adenoma ◽  
White Light ◽  
Color Imaging ◽  
Randomized Control Study ◽  
Adenoma Detection ◽  
Randomized Control ◽  
Linked Color Imaging ◽  
White Light Imaging ◽  
Control Study
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