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Nihon Rinsho. 2005 Aug;63(8):1411-5.

[Magnification endoscopy diagnosis of Barrett's esophagus with methylene blue and acetic acid].

[Article in Japanese]

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Internal Medicine, Niigata Prefectural Yoshida Hospital.


Intestinal metaplasia of Barrett's esophagus is pre-cancerous lesion and it is important to diagnose intestinal metaplasia by endoscopic examination. Predefined 4 quadrant sampling technique is popular in western countries. However, chromoendoscopy or magnification endoscopy have been tried to diagnose intestinal metaplasia. We have carried out magnification endoscopy with methylene blue and magnification endoscopy with acetic acid. In magnification endoscopy with methylene blue, intestinal metaplasia showed blue-staining area with tubulaous or cavernous pattern. In magnification endoscopy with acetic acid, all of epithelium of Barrett's esophagus changed to whitening surface and it was easy to observe the structure of each epithelium. Intestinal metaplasia showed tubulaous or villous, although fundic type showed pits of small round and cardiac type showed oval pattern with central-slit pits.

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