scholarly journals Narrow-band imaging for diagnosis of squamous cell carcinoma in the anal canal

2016 ◽  
Author(s):  
Yoji Takeuchi
Keyword(s):  
Squamous Cell Carcinoma ◽  
Anal Canal ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Narrow Band ◽  
Narrow Band Imaging

BENEFICIAL USE OF MAGNIFYING ENDOSCOPY WITH NARROW-BAND IMAGING FOR DIAGNOSING A PATIENT WITH SQUAMOUS CELL CARCINOMA OF THE ANAL CANAL

2011 ◽  
Vol 24 (1) ◽  
pp. 42-45 ◽  
Author(s):  
TOMOHITO MORISAKI ◽  
HAJIME ISOMOTO ◽  
YUKO AKAZAWA ◽  
NAOYUKI YAMAGUCHI ◽  
KEN OHNITA ◽  
...  
Keyword(s):  
Squamous Cell Carcinoma ◽  
Anal Canal ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Magnifying Endoscopy ◽  
Beneficial Use

scholarly journals Narrow band imaging under less-air condition improves the visibility of superficial esophageal squamous cell carcinoma

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Taro Iwatsubo ◽  
Ryu Ishihara ◽  
Yasushi Yamasaki ◽  
Yusuke Tonai ◽  
Kenta Hamada ◽  
...  
Keyword(s):  
Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Color Change ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Endoscopic Observation ◽  
Flat Type ◽  
The Mean ◽  
Visibility Score

Abstract Background The current virtual chromoendoscopy equipment cannot completely detect superficial squamous cell carcinoma (SCC) in the esophagus, despite its development in the recent years. Thus, in this study, we aimed to elucidate the appropriate air volume during endoscopic observation to improve the visibility of esophageal SCC. Methods This retrospective study included a total of 101 flat type esophageal SCCs identified between April 2017 and January 2019 at the Department of Gastrointestinal Oncology, Osaka International Cancer Institute. Video images of narrow band imaging (NBI) under both less-air and standard-air conditions were recorded digitally. Videos were evaluated by five endoscopists. Relative visibility between less-air and standard-air conditions of the brownish area, brownish color change of the epithelium, and dilated intrapapillary capillary loop (IPCL) were graded as 5 (definitely better under less-air condition) to 1 (definitely worse under less-air condition), with 3 indicating average visibility (equivalent to standard-air observation). Results The mean (standard deviation) visibility score of the brownish area, brownish color change of the epithelium, and dilated IPCLs under less-air condition were 3.94 (0.58), 3.73 (0.57), and 4.13 (0.60), respectively, which were significantly better than that under standard-air condition (p < 0.0001). Esophageal SCC evaluated as ≥ 4 in the mean visibility score of the brownish area, brownish color change of the epithelium, and dilated IPCLs accounted for 50% (51/101 lesions), 34% (34/101 lesions), and 67% (68/101 lesions), respectively. Conclusions The present results suggested that NBI with less air might improve the visibility of flat type esophageal SCC compared with NBI with standard air. Less-air NBI observation may facilitate the detection of flat type esophageal SCC. Trial registration The present study is a non-intervention trial.

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