John Libbey Eurotext

Hépato-Gastro & Oncologie Digestive

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What are the indications of chromoendoscopy? Volume 21, issue 6, Juin 2014

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Authors
1 Hôpital Edouard Herriot,
service de gastro-entérologie et d’endoscopie digestive,
Pavillon H,
5 place d’Arsonval,
69437 Lyon,
France
2 Endoscopy division,
National cancer center hospital,
Tokyo,
Japon
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Chromoendoscopy is a technique of mucosal staining to refine white light imaging endoscopy with interests for detection, characterization or to define the extension of the lesion. There are two main types of coloration: by projection of a dye (surface or a vital dye into the cell) and virtual coloring using a coloured light or post-processing of the image. Dye stainings are sometimes complex and time-consuming. Conversely, virtual coloring as the NBI is easy to use, provide additional information on the vascular pattern but cannot replace coloring in many indications. In the esophagus, searching for squamous cell carcinoma is made with the projection of Lugol but virtual coloring (NBI) are a simple and efficient alternative whose use may be more widely spread. In Barrett's esophagus, NBI brings a profit important for detection and characterization of lesions. In the stomach, the NBI is a simple tool to better detect intestinal metaplasia and characterize the dysplastic areas whose use only takes a few seconds. Finally in the colon, only Carmine indigo showed its important benefit for detection and its use should be systematic in subjects at high risk. The NBI becomes an essential characterization tool and the NICE classification will allow us to adopt a common description.