Barrett’s Esophagus: Emerging Knowledge and Management Strategies
Figure 1
(a) Schematic representation of the Prague criteria for endoscopically suspected esophageal columnar metaplasia/Barrett’s esophagus, Step 1: recognize the presence of hiatal hernia; Step 2: identify GEJ and record depth of scope insertion; Step 3: recognize suspected BE mucosa above the GEJ; Step 4: record the depth of scope insertion at the most proximal circumferential extent of BE; Step 5: record the depth of scope insertion at maximum extent of BE; Step 6: subtract the depth of insertion for circumferential and maximum extents from the depth of scope insertion at the GEJ to calculate C and M, respectively. *Endoscopically suspected columnar mucosa. Adapted from [16]. (b) endoscopic image of Barrett’s esophagus for circumferential (C) and maximum (M) extent of columnar mucosa, corresponding to the schematic representation shown in Figure 1(a), (c) another endoscopic image of BE using narrow-band imaging (NBI). NBI is a high-resolution endoscopic tool that enhances mucosal surface details without the need for special dyes (electronic chromoendoscopy).
