GI Endoscopy · 1 min read
Interventional chromoendoscopy
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Chromoendoscopy is a well-defined advanced imaging method to find and define gastrointestinal mucosal lesions. Traditional chromoendoscopy is performed by applying various types of dye topically.
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Chromoendoscopy is a well-defined advanced imaging method to find and define gastrointestinal mucosal lesions. Traditional chromoendoscopy is performed by applying various types of dye topically.
Interventional chromoendoscopy is defined as the injected use of various dyes such as Indigo carmine and methylene blue. By injecting diluted dyes into the submucosa flat lesions can be better visualized (Fig 1). In addition, injection of diluted dyes enhances our ability to define the dissection planes and thus avoid cutting deeper planes and causing unintended perforation (Fig. 1).
Additional types of interventional chromoendoscopy are injection of India ink to mark the site of a tumor such as a gastrointestinal stromal tumor or an incompletely resected colon polyp. Furthermore, injection of dyes through orifices or fistulae allow to detect their location and potential connections (Fig. 2). On some occasions we have injected contrast through the opening of an enterocutaneous fistula to find its luminal counterpart opening and thus have a target site to apply the closure devices, such as through-the-scope or over-the-scope clips.
https://www.giejournal.org/article/S0016-5107(13)01849-X/fulltext
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