scholarly journals A Comparison of Magnifying Chromoendoscopy Versus Narrow Band Imaging in the Diagnosis of Depth of Invasion for Early Colorectal Cancers

2011 ◽  
Vol 23 (2) ◽  
pp. 129-144
Author(s):  
Yasutoshi KOBAYASHI ◽  
Shin-ei KUDO ◽  
Hideyuki MIYACHI ◽  
Toshihisa HOSOYA ◽  
Takemasa HAYASHI ◽  
...  
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Colorectal Cancers ◽  
Depth Of Invasion ◽  
Magnifying Chromoendoscopy

Comparison of magnifying chromoendoscopy and narrow band imaging for diagnosis of small colorectal polyps

2011 ◽  
Vol 49 (05) ◽  
Author(s):  
I Rácz ◽  
Z Horváth ◽  
N Dancs ◽  
V Kovács ◽  
G Szabó ◽  
...  
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Colorectal Polyps ◽  
Magnifying Chromoendoscopy

scholarly journals Brief Education on Microvasculature and Pit Pattern for Trainees Significantly Improves Estimation of the Invasion Depth of Colorectal Tumors

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Joon Sung Kim ◽  
Bo-In Lee ◽  
Hwang Choi ◽  
Bong Koo Kang ◽  
Jong In Kim ◽  
...  
Keyword(s):  
Diagnostic Accuracy ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Pattern Identification ◽  
Submucosal Invasion ◽  
Colorectal Tumors ◽  
Pit Pattern ◽  
Invasion Depth ◽  
White Light Endoscopy ◽  
Magnifying Chromoendoscopy

Objectives. This study was performed to evaluate the effectiveness of education for trainees on the gross findings identified by conventional white-light endoscopy (CWE), the microvascular patterns identified by magnifying narrow-band imaging endoscopy (MNE), and the pit patterns identified by magnifying chromoendoscopy (MCE) in estimation of the invasion depth of colorectal tumors.Methods. A total of 420 endoscopic images of 35 colorectal tumors were used. Five trainees estimated the invasion depth of the tumors by reviewing the CWE images before education. Afterwards, the trainees estimated the invasion depth of the same tumors after brief education on CWE, MNE and MCE images, respectively.Results. The initial diagnostic accuracy for deep submucosal invasion before education and after education on CWE, MNE, and MCE findings was 54.3%, 55.4%, 67.4%, and 76.6%, respectively. The diagnostic accuracy increased significantly after MNE education (P=0.028). The specificity for deep submucosal invasion before education and after education on CWE, MNE, and MCE findings was 47.9%, 45.7%, 65.0%, and 80.7%, respectively. The specificity increased significantly after MNE (P=0.002) and MCE (P=0.005) education.Conclusion. Brief education on microvascular pattern identification by MNE and pit pattern identification by MCE significantly improves trainees’ estimations of the invasion depth of colorectal tumors.

scholarly journals Magnifying image-enhanced endoscopy for collagenous colitis

2017 ◽  
Vol 05 (11) ◽  
pp. E1069-E1073 ◽  
Author(s):  
Masaaki Kobayashi ◽  
Takahiro Hoshi ◽  
Shin-ich Morita ◽  
Tsutomu Kanefuji ◽  
Takeshi Suda ◽  
...  
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Case Series ◽  
Collagenous Colitis ◽  
Capillary Network ◽  
Watery Diarrhea ◽  
High Magnification ◽  
Histological Characteristics ◽  
Magnifying Chromoendoscopy ◽  
Collagen Layer

Abstract Background and study aims We report a case series of 5 patients with collagenous colitis (CC) presenting with chronic watery diarrhea, who were subjected to magnifying, chromoendoscopy and narrow band imaging (NBI). Magnifying chromoendoscopy revealed whitish-clouded, honeycomb-like appearance at orifices of the crypts. NBI with high magnification revealed irregular caliber variation of the subepithelial capillary network. Presence of these features corresponded with histological characteristics of CC indicated by thickening of the subepithelial collagen layer. We concluded that magnifying image-enhanced endoscopy is a reliable tool to diagnose CC.

scholarly journals NBI and NBI Combined with Magnifying Colonoscopy

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Mineo Iwatate ◽  
Taro Ikumoto ◽  
Santa Hattori ◽  
Wataru Sano ◽  
Yasushi Sano ◽  
...  
Keyword(s):  
Narrow Band Imaging ◽  
Adenomatous Polyps ◽  
Screening Colonoscopy ◽  
Histological Evaluation ◽  
Early Colorectal Cancer ◽  
Depth Of Invasion ◽  
Diagnostic Strategies ◽  
Magnifying Colonoscopy ◽  
Magnifying Chromoendoscopy ◽  
Meta Analyses

Although magnifying chromoendoscopy had been a reliable diagnostic tool, narrow-band imaging (NBI) has been developed in Japan since 1999 and has now replaced the major role of chromoendoscopy because of its convenience and simplicity. In this paper, we principally describe the efficacy of magnifying chromoendoscopy and magnifying colonoscopy with NBI for detection, histological prediction, estimation of the depth of early colorectal cancer, and future prospects. Although some meta-analyses have concluded that NBI is not superior to white light imaging for detection of adenomatous polyps in screening colonoscopy, NBI with magnification colonoscopy is useful for histological prediction, or for estimating the depth of invasion. To standardize these diagnostic strategies, we will focus on the NBI International Colorectal Endoscopic (NICE) classification proposed for use by endoscopists with or without a magnifying endoscope. However, more prospective research is needed to prove that this classification can be applied with satisfactory availability, feasibility, and reliability. In the future, NBI might contribute to the evaluation of real-time histological prediction during colonoscopy, which has substantial benefits for both reducing the risk of polypectomy and saving the cost of histological evaluation by resecting and discarding diminutive adenomatous polyps (resect and discard strategy).

Sign in / Sign up

Export Citation Format

Share Document