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Back| Grade | Endoscopic Findings |
|---|---|
| A | Lesions confined to the mucosal folds, diameter <0.5cm |
| B | Lesions still confined to the mucosal folds, not confluent, but diameter >0.5cm |
| C | Lesions confluent at the top of the mucosa, but not encircling the entire esophageal wall |
| D | Lesions confluent, involving >75% of the esophageal wall |
Explanation
GERD, gastroesophageal reflux disease.
The Los Angeles classification system was proposed at the 10th World Congress of Gastroenterology in Los Angeles in 1994 and reiterated at the 11th Congress in 1998. This classification system defines esophageal mucosal damage as white plaques or erythema with clear boundaries from the surrounding mucosa, and classifies RE into four grades: A~D based on the extent of mucosal damage.
