A training program of a new simplified classification of magnified narrow band imaging for superficial esophageal squamous cell carcinoma

Wang, Wen‐Lun; Chiu, Sherry Yueh Hsia; Lee, Ching‐Tai; Tseng, Cheng‐Hao; Chen, Chien-Chuan; Han, Ming‐Lun; Chung, Chen‐Shuan; Hsieh, Ping‐Hsin; Chang, Wei‐Lun; Wu, Ping-Hsiu; Hsu, Wen‐Hung; Yen, Hsu‐Heng; Wang, Hsiu-Po; Chang, Chi‐Yang

doi:10.1111/jgh.14071

Cited by 8 publications

(15 citation statements)

References 27 publications

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“…The study conducted by Wang et al . also could not show the additional benefit of M‐NBI . Diagnostic accuracy of the invasion depth was 53% for WLE alone and 57% for WLE with M‐NBI ( P > 0.05).…”

Section: Discussionmentioning

confidence: 87%

“…Currently, there are only three articles written in English regarding the additional effect of M‐NBI on WLE in estimating the invasion depth of superficial esophageal SCCs . Ebi et al .…”

Section: Discussionmentioning

confidence: 99%

“…One prospective study reported that the JES classification had an overall accuracy of 90.5%; however, the trial was conducted by the committee members of JES, who were already familiar with the classification, which may raise some concerns about the results' generalizability. Moreover, in that trial, the diagnosis of the invasion depth was conducted only with M‐NBI findings; however, in our clinical practice, the diagnosis is usually made by the combined use of WLE and M‐NBI …”

Section: Introductionmentioning

confidence: 99%

“…Whether M‐NBI findings actually provide an additional value to estimate the invasion depth compared with WLE alone still remains controversial . Therefore, we planned a study to elucidate the contribution of M‐NBI to the improvement in estimating the invasion depth of superficial esophageal SCCs compared with that of WLE alone.…”

Section: Introductionmentioning

confidence: 99%

“…7 The invasion depth of superficial esophageal SCCs is usually estimated by the macroscopic appearance of the lesion using white light endoscopy (WLE) as follows: EP/LPM, flat lesion with no irregularity on its surface; MM/SM1, slightly elevated/depressed lesion with irregularity on its surface; and SM2, lesion with protrusion or deep depression. 1,8,9 However, magnifying narrow-band imaging (M-NBI) has provided another approach to predict tumor depth through the visualization of the microvessels of the tumor, whose morphological patterns are known to have a close relationship with the tumor depth. 10 In 2012, the Japan Esophageal Society (JES) established a simple classification of M-NBI findings to differentiate the invasion depth of superficial esophageal SCCs.…”

Section: Introductionmentioning

confidence: 99%

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Additional effect of magnifying narrow‐band imaging on estimating the invasion depth of superficial esophageal cancer

et al. 2019

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Background and Aim To investigate whether assessment by magnifying narrow‐band imaging (M‐NBI) based on the classification of the Japan Esophageal Society provides additional value to the estimation of the invasion depth of superficial esophageal squamous cell carcinoma (SCC) compared with assessment by white light endoscopy (WLE) alone. Methods Endoscopic images of 211 consecutive superficial esophageal SCCs resected by endoscopic submucosal dissection were separated into WLE and M‐NBI images. Depth estimation was performed independently by five evaluators using the numerical depth estimation scale (0 = epithelium (EP)/lamina propria (LPM), 1 = EP/LPM > muscularis mucosa (MM)/shallow submucosa (SM1), 2 = MM/SM1 > EP/LPM, 3 = MM/SM1, 4 = MM/SM1 > deep submucosa (SM2), 5 = SM2 > MM/SM1, 6 = SM2), using primarily WLE images (step 1), and subsequently both WLE and M‐NBI images (step 2). The discordance scores, determined by the average of the five evaluators' difference between the estimated score (from 0 to 6) and pathological score (0 for histologically proven EP/LPM, 3 for MM/SM1, and 6 for SM2), were analyzed in steps 1 and 2. Results The discordance scores significantly decreased in step 2 (0.53 ± 0.06) compared with those in step 1 (0.79 ± 0.07) (P < 0.001). When the discordance score < 1.5 was regarded as a clinically correct diagnosis, the rate of the clinically correct diagnosis significantly increased in step 2 compared with that in step 1 (81% to 91%, P < 0.001). Conclusion M‐NBI has an additive value for estimating the invasion depth of superficial esophageal SCCs.

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Section: Discussionmentioning

confidence: 87%

“…Currently, there are only three articles written in English regarding the additional effect of M‐NBI on WLE in estimating the invasion depth of superficial esophageal SCCs . Ebi et al .…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%