1. Volume 131, Issue 5, Pages 1392-1399 (November 2006)
The Development and Validation of an Endoscopic Grading System for Barrett’s Esophagus: The Prague C & M Criteria 
Prateek Sharma, John Dent, David Armstrong, Jacques J.G.H.M. Bergman, Liebwin Gossner, Yoshio Hoshihara, Janusz A. Jankowski, Ola Junghard, Lars Lundell, Guido N.J. Tytgat, Michael Vieth 
Gastroenterology 
Volume 131, Issue 5, Pages (November 2006)
DOI: /j.gastro
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2. Figure 1 Assessment score sheet for analysis of endoscopy videos.
Gastroenterology  , DOI: ( /j.gastro )
Copyright © 2006 AGA Institute Terms and Conditions

3. Figure 2
Endoscopic grading system for Barrett’s esophagus. A copy of these instructions was given to assessors participating in the validation of the grading system. GEJ: gastroesophageal junction.
Gastroenterology  , DOI: ( /j.gastro )
Copyright © 2006 AGA Institute Terms and Conditions

4. Figure 3
Diagrammatic representation of endoscopic Barrett’s esophagus showing an area classified as C2M5. C: extent of circumferential metaplasia; M: maximal extent of the metaplasia (C plus a distal “tongue” of 3 cm); GEJ: gastroesophageal junction.
Gastroenterology  , DOI: ( /j.gastro )
Copyright © 2006 AGA Institute Terms and Conditions

5. Figure 4
Video still of endoscopic Barrett’s esophagus showing an area classified as C2M5. C: extent of circumferential metaplasia; M: maximal extent of the metaplasia (C plus a distal “tongue” of 3 cm).
Gastroenterology  , DOI: ( /j.gastro )
Copyright © 2006 AGA Institute Terms and Conditions