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Role of endoscopy in GERD diagnosis based on Lyon consensus6
| Evidence | Endoscopy |
|---|---|
| Conclusive evidence for pathologic reflux | LA grades C and D esophagitis |
| Long-segment Barrett’s esophagus | |
| Peptic esophageal stricture | |
| Borderline or inconclusive evidence | LA grades A and B esophagitis |
| Adjunctive or supportive evidence | Histopathology (score) |
| Electron microscopy (dilated intercellular spaces) |
GERD, gastroesophageal reflux disease; LA, Los Angeles.
