Diagnostic ability of Japan Narrow-Band Imaging Expert Team classification for colorectal lesions by magnifying endoscopy with blue laser imaging versus narrow-band imaging

Ito, Renma; Ikematsu, Hiroaki; Murano, Tatsuro; Shinmura, Kensuke; Kojima, Masaru; Kumahara, Kana; Furue, Yasuaki; Sunakawa, Hajime; Minamide, Tatsunori; Sato, Daiki; Yamamoto, Yoichi; Takagi, Kenji; Yoda, Yusuke; Yano, Tomonori

doi:10.1055/a-1324-3083

Cited by 13 publications

(11 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We reported the diagnostic value of magnifying blue laser imaging (BLI) by Fujifilm, which uses a 450-nm white laser and a 410-nm narrow-band short-wavelength laser suitable for the observation of superficial vessels, indicating that there was no difference in the diagnostic performance of the magnifying observation with BLI compared to NBI for the JNET diagnosis. 40 Huang et al 41 also demonstrated the usefulness of the JNET classification with magnifying BLI endoscopy. Furthermore, Yoshida et al 42 showed that the diagnostic effectiveness for invasion depth by BLI magnification is similar to that of NBI magnification.…”

Section: Depth Diagnosis Using the Jnet Classificationmentioning

confidence: 99%

Depth diagnosis of early colorectal cancer: Magnifying chromoendoscopy or image enhanced endoscopy with magnification?

Ikematsu

Murano

Shinmura

2021

Digestive Endoscopy

Self Cite

View full text Add to dashboard Cite

Depth diagnosis is extremely crucial in making a treatment choice between endoscopic resection and surgery in the early stages of cancers. Among several imaging modalities, we use magnifying endoscopy to diagnose lesions by close observation of the findings at mucosal surface layer. In combination with topical staining, magnifying endoscopy enables us to assess the definite pit structure, which referred to as magnifying chromoendoscopy (MCE). The pit pattern classification by MCE was proposed and is now widely accepted as the standard diagnostic criteria for colorectal lesions. Meanwhile, image enhanced endoscopy (IEE) represented by narrow-band imaging was developed to improve the visibility of surface and vascular findings without dyeing. Recent collaborative work performed by endoscopic experts in Japan yielded the unified diagnostic criteria, the Japan NBI Expert Team (JNET) classification, based on the findings of IEE with magnification. In this review, focusing on MCE and IEE with magnification, we aimed to give an outline of the pit pattern classification and the JNET classification, and further discuss their accuracy rate of depth diagnosis of early colorectal lesions by performing a review of the related literature. Both modalities have a high accuracy rate of nearly 90% for depth diagnosis. IEE with magnification is an ideal modality because it helps observe lesions without dye spraying; however, lesions with JNET type 2B have an inadequate diagnostic ability, which should be complemented by MCE. We conclude that accurate diagnosis is possible by examining lesions using both modalities properly to overcome the limitations of each modality.

show abstract

Section: Depth Diagnosis Using the Jnet Classificationmentioning

confidence: 99%

Depth diagnosis of early colorectal cancer: Magnifying chromoendoscopy or image enhanced endoscopy with magnification?

Ikematsu

Murano

Shinmura

2021

Digestive Endoscopy

Self Cite

View full text Add to dashboard Cite

show abstract

“…Third, the NBI mode and 290 series endoscopes were used in this study. Verification using other image-enhancing modalities, such as BLI[ 20 ], linked color imaging (LCI, Fujifilm Corporation)[ 33 ], texture and color enhancement imaging (TXI, Olympus Corporation), and using new colonoscopes, such as CF-EZ1500D and CF-XZ1200 (Olympus Corporation), are warranted. Fourth, the diagnostic efficacy of brown slit sign has not been proven to be equivalent to that of the JNET classification, although the brown slit sign may be simpler and easier than the JNET classification.…”

Section: Discussionmentioning

confidence: 99%

“…Magnification, dye sprays, and modified light wavelengths, such as narrow band imaging (NBI) and blue laser imaging (BLI), are used to diagnose premalignant polyps better. The criteria for conventional magnifying endoscopy include pit pattern diagnosis using chromoendoscopy[ 17 ] and the Japan NBI expert team (JNET) classification using NBI and BLI[ 18 - 20 ]. The standards for ultra-high magnifying endocytoscopy (EC) are as follows: EC classification, which evaluates the glandular structure and cellular atypia after double staining with methylene blue and crystal violet[ 21 - 24 ], and EC vascular classification, which evaluates the microvessels using NBI[ 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Brown slits for colorectal adenoma crypts on conventional magnifying endoscopy with narrow band imaging using the X1 system

Toyoshima¹,

Nishizawa²,

Yoshida³

et al. 2022

WJG

View full text Add to dashboard Cite

BACKGROUND Accurate diagnosis of colorectal premalignant polyps, including adenomas, is vital in clinical practice. AIM To investigate the diagnostic yields of novel findings of brown slits for adenomas. METHODS Patients who underwent colonoscopy at the Toyoshima Endoscopy Clinic were enrolled. Polyps sized ≥ 5 mm suspected of adenomas or clinically significant serrated polyps were included in the study. We defined the surface structures of colorectal polyps, which were brown curves inside and along the tubular glands identified using a combination of a new X1 system (Olympus Corporation) and a conventional magnifying colonoscope with non-staining narrow band imaging (NBI), as brown slits. The brown slits corresponded to slit-like lumens on endocytoscopy and histological crypt openings of an adenoma. We evaluated the diagnostic performance of brown slits for adenoma. RESULTS A total of 108 Lesions from 62 patients were eligible. The average age was 60.4 years and 41.9% were male. The mean polyp size was 7.45 ± 2.83 mm. Fifty-seven lesions were positive for brown slits. Histopathological diagnosis comprised 59 low-grade tubular adenomas, 16 sessile serrated lesions, and 33 hyperplastic polyps. Among 59 adenomas, 56 (94.9%) were positive for brown slits. Among 16 sessile serrated lesions, 0 (0%) was positive for brown slits. Among 33 hyperplastic polyps, 1 (3.0%) was positive for brown slits. The sensitivity, specificity, and accuracy of brown slits for adenoma were 94.9%, 98.0%, and 96.3%, respectively. The positive predictive value and negative predictive value of brown slits for adenoma were also excellent for 98.2%, and 94.1%, respectively. CONCLUSION Brown slits on conventional magnifying endoscopy with non-staining NBI using the X1 system were useful for diagnosing colorectal adenoma. The new endoscopy system could be examined using new standards.

show abstract

“…Our previous multicenter study highlighted that the diagnostic accuracies of BLI-LASER and NBI for 104 neoplastic lesions were 74.0% and 77.8%, respectively [ 2 ]. A recent study also reported that the diagnostic ability of the JNET classification for colorectal lesions with magnifying endoscopy with BLI-LASER was comparable to that of magnifying endoscopy with narrowband imaging [ 24 ].…”

Section: Discussionmentioning

confidence: 99%

The Efficacy of Tumor Characterization for Colorectal Lesions with Blue Light Imaging of a Compact Light-Emitting Diode Endoscopic System Compared to a Laser Endoscopic System: A Pilot Study

Inoue

Yoshida

Kobayashi

et al. 2022

Gastroenterology Research and Practice

View full text Add to dashboard Cite

Background: A compact and cost-effective light source-processor combined 3-color light-emitting diode (LED) endoscopic system (ELUXEO-Lite: EP-6000, Fujifilm Co., Tokyo) with a magnified colonoscope (EC-6600ZP, Fujifilm Co.) has been released. Aims: In this study, we analyzed the efficacy of this system for colorectal tumor characterization with magnified blue light imaging (BLI-LED) and image’s subjective and objective evaluations, compared to a magnified blue laser imaging (BLI-LASER) using a standard LASER endoscopic system. Methods: We retrospectively reviewed 37 lesions observed with both BLI-LED and BLI-LASER systems from 2019 using the Japanese narrow band imaging classification. Two representative magnified images, one BLI-LED and one BLI-LASER, of the same area of a lesion were evaluated for diagnostic accuracy and visualization quality by three experts and three non-experts. Their color difference values (CDVs) and brightness values (BVs) were also calculated as objective indicators. Results: Among 37 lesions, mean tumor size was 18.9 ± 13.1 mm, and 21 lesions were nonpolypoid. Histopathology revealed 14 sessile serrated lesions, 7 adenomas, 12 high-grade dysplasias and T1a cancers, and 4 T1b cancers. The diagnostic accuracy rates of BLI-LED/BLI-LASER of experts and non-experts were 90.1% and 87.4% ( p = 0.52 ) and 89.2% and 89.2% ( p = 0.99 ). The percentages of instances where BLI-LED images were better, the two imaging types were equivalent, or BLI-LASER images were better were 16%/83%/1% for experts and 19%/58%/23% for non-experts ( p < 0.001 ). CDVs and BVs between BLI-LED and BLI-LASER were not significantly different (CDVs: p = 0.653 , BVs: p = 0.518 ). Conclusions: BLI-LED using the compact system was noninferior to BLI-LASER for colorectal tumor characterization and image quality.

show abstract

Diagnostic ability of Japan Narrow-Band Imaging Expert Team classification for colorectal lesions by magnifying endoscopy with blue laser imaging versus narrow-band imaging

Cited by 13 publications

References 19 publications

Depth diagnosis of early colorectal cancer: Magnifying chromoendoscopy or image enhanced endoscopy with magnification?

Depth diagnosis of early colorectal cancer: Magnifying chromoendoscopy or image enhanced endoscopy with magnification?

Brown slits for colorectal adenoma crypts on conventional magnifying endoscopy with narrow band imaging using the X1 system

The Efficacy of Tumor Characterization for Colorectal Lesions with Blue Light Imaging of a Compact Light-Emitting Diode Endoscopic System Compared to a Laser Endoscopic System: A Pilot Study

Contact Info

Product

Resources

About