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No consensus-based guidelines define methods for accurately and reproducibly recognizing and measuring the length of Barrett esophagus (BE), and considerable variation exists within and between observers’ evaluations. A group of international BE experts now present a validated consensus-based system to standardize endoscopic criteria for grading BE.
High-quality digital video recordings of endoscopies in patients with or without BE were used to devise and refine criteria. Concurrently with the digital recording, a numeric display defined the depth of endoscopic insertion (measured from the bite block). Endoscopic criteria were based on anatomic landmarks, with the gastroesophageal junction (GEJ) identified as the proximal margin of the gastr…