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Colon cancer screening with image-enhanced endoscopy.

Ko BM - Clin Endosc (2014)

Bottom Line: This screening has resulted in long-term risk reduction in asymptomatic individuals.Image-enhanced endoscopies (IEEs), including the use of topical dyes, optical filtering, and ultramagnification, allow for gastrointestinal lesion analysis.IEE can be used to help the endoscopist to improve their ADR in screening colonoscopy.

View Article: PubMed Central - PubMed

Affiliation: Division of Gastroenterology, Department of Internal Medicine, Soonchunhyang University College of Medicine, Bucheon, Korea.

ABSTRACT
Colorectal cancer (CRC) is a major cause of cancer mortality worldwide, and this has led to an increased use of screening colonoscopy. This screening has resulted in long-term risk reduction in asymptomatic individuals. However, endoscopists may fail to detect advanced adenomas or colon cancer during screening. The reasons that adenomas or cancers are missed are thought to be associated with the location of the lesions or the skills of the endoscopist. To address the limitations of white light endoscopy (WLE) for adenoma detection, advanced endoscopic images have recently been used. Image-enhanced endoscopies (IEEs), including the use of topical dyes, optical filtering, and ultramagnification, allow for gastrointestinal lesion analysis. Many studies have compared the adenoma detection rate (ADR) obtained by using WLE and IEE, but with different results. IEE can be used to help the endoscopist to improve their ADR in screening colonoscopy. This review examines the possible roles of image-enhanced colonoscopy in CRC screening.

No MeSH data available.


Related in: MedlinePlus

White light endoscopic image (A) small polyp detected on narrow band imaging (B, C).
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Figure 2: White light endoscopic image (A) small polyp detected on narrow band imaging (B, C).

Mentions: NBI illuminates the tissue surface by using optical filters that narrow the respective red-green-blue bands, while simultaneously increasing the relative intensity of the blue band.9 This spectrum of wavelengths has a decreased depth of penetration and corresponds to the peak absorption spectrum of hemoglobin. The NBI technique overcomes the disadvantages of conventional CE by obviating the need for dyes and allowing conversion from WLE to NBI, and vice versa, by the flick of a switch on the endoscope (Fig. 2). It is therefore considered a more time-efficient procedure than CE.10,11


Colon cancer screening with image-enhanced endoscopy.

Ko BM - Clin Endosc (2014)

White light endoscopic image (A) small polyp detected on narrow band imaging (B, C).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4260097&req=5

Figure 2: White light endoscopic image (A) small polyp detected on narrow band imaging (B, C).
Mentions: NBI illuminates the tissue surface by using optical filters that narrow the respective red-green-blue bands, while simultaneously increasing the relative intensity of the blue band.9 This spectrum of wavelengths has a decreased depth of penetration and corresponds to the peak absorption spectrum of hemoglobin. The NBI technique overcomes the disadvantages of conventional CE by obviating the need for dyes and allowing conversion from WLE to NBI, and vice versa, by the flick of a switch on the endoscope (Fig. 2). It is therefore considered a more time-efficient procedure than CE.10,11

Bottom Line: This screening has resulted in long-term risk reduction in asymptomatic individuals.Image-enhanced endoscopies (IEEs), including the use of topical dyes, optical filtering, and ultramagnification, allow for gastrointestinal lesion analysis.IEE can be used to help the endoscopist to improve their ADR in screening colonoscopy.

View Article: PubMed Central - PubMed

Affiliation: Division of Gastroenterology, Department of Internal Medicine, Soonchunhyang University College of Medicine, Bucheon, Korea.

ABSTRACT
Colorectal cancer (CRC) is a major cause of cancer mortality worldwide, and this has led to an increased use of screening colonoscopy. This screening has resulted in long-term risk reduction in asymptomatic individuals. However, endoscopists may fail to detect advanced adenomas or colon cancer during screening. The reasons that adenomas or cancers are missed are thought to be associated with the location of the lesions or the skills of the endoscopist. To address the limitations of white light endoscopy (WLE) for adenoma detection, advanced endoscopic images have recently been used. Image-enhanced endoscopies (IEEs), including the use of topical dyes, optical filtering, and ultramagnification, allow for gastrointestinal lesion analysis. Many studies have compared the adenoma detection rate (ADR) obtained by using WLE and IEE, but with different results. IEE can be used to help the endoscopist to improve their ADR in screening colonoscopy. This review examines the possible roles of image-enhanced colonoscopy in CRC screening.

No MeSH data available.


Related in: MedlinePlus