Table 2 Los Angeles classification of the severity of reflux esophagitis

A

One (or more) mucosal break(s) no longer than 5 mm that does not extend between the tops of two mucosal folds

B

One (or more) mucosal break(s) more than 5 mm long that does not extend between the tops of two mucosal folds

C

One (or more) mucosal break(s) that is continuous between the tops of two or more mucosal folds but which involve(s) less than 75% of the circumference

D

One (or more) mucosal break(s) that involve(s) at least 75% of the esophageal circumference