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    Chief Complaint


    Organ System


    Patent Pending

    Los Angeles (LA) Grading of Esophagitis

    Stratifies severity of esophagitis based on endoscopic findings, recommended by ACG guidelines.
    When to Use
    Why Use

    Patients with findings of erosive esophagitis on endoscopy.

    Developed by consensus of a working group at the 10th World Congress of Gastroenterology in 1994.

    Mucosal break(s) ≤5 mm, without continuity across mucosal folds
    Mucosal break(s) >5 mm, without continuity across mucosal folds
    Mucosal break(s) continuous between ≥2 mucosal folds, involving <75% of the esophageal circumference
    Mucosal break(s) involving ≥75% of the esophageal circumference


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    Creator Insights
    Dr. David Armstrong

    About the Creator

    David Armstrong, MA, MB BChir, FRCP, FRCPC, FACG, AGAF, is a professor of medicine at McMaster University. His research interests include gastroesophageal reflux disease (GERD), dyspepsia, gastrointestinal (GI) motility, inflammatory bowel disease (IBD), nutrition, short bowel syndrome, colon cancer screening, and quality in endoscopy with 200 peer-reviewed publications, 100 invited reviews and letters, and 300 peer-reviewed abstracts. He has been a principal investigator for numerous clinical trials and taken part in many guideline consensus processes related to GERD, Helicobacter pylori, dysphagia, upper GI bleeding, gastroparesis, wireless capsule endoscopy and endoscopy quality. He is a past president of the Canadian Association of Gastroenterology (CAG), chair of the Canadian National Colon Cancer Screening Network (NCCSN), treasurer of the International Working Group for the Classification of Oesophagitis (IWGCO), chair of the guidelines committee for the World Gastroenterology Organization (WGO) and a board member of the Canadian Digestive Health Foundation (CDHF).

    To view Dr. David Armstrong's publications, visit PubMed

    Dr. Lars R. Lundell

    About the Creator

    Lars R. Lundell, MD, PhD, is a practicing surgeon and professor of surgery at Karolinska University Hospital in Stockholm, Sweden. He previously served as board member and president of the European Association for Gastroenterology and on the leadership of other societies including Endoscopy and Nutrition (EAGEN), European Society for Esophagology (ESE), the United European Gastroenterology (UEG) Education Committee, the International Working Group for Classification of Oesophagitis (IWGCO), and the International Society for Diseases of the Esophagus (ISDE). Dr. Lundell's primary research interest is GERD, and he has also studied cancer of the stomach and esophagus.

    To view Dr. Lars R. Lundell's publications, visit PubMed

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    MDCalc loves calculator creators – researchers who, through intelligent and often complex methods, discover tools that describe scientific facts that can then be applied in practice. These are real scientific discoveries about the nature of the human body, which can be invaluable to physicians taking care of patients.
    About the Creator
    Dr. David Armstrong
    Dr. Lars R. Lundell
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