A 54-year-old man presents with persistent heartburn and regurgitation despite six weeks of once-daily omeprazole. He has no dysphagia, weight loss, or anemia. An upper gastrointestinal endoscopy is performed, which shows mucosal breaks in the distal esophagus that are longer than 5 mm and involve less than 75% of the oesophageal circumference, but do not extend between the tops of adjacent mucosal folds.
What is the most appropriate Los Angeles classification for this patient’s esophagitis?
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