Distinguishing gastroesophageal reflux disease and eosinophilic esophagitis in adults: The role of esophageal mucosal immunoglobulin G4.
Stephanie WongGeorgia SmithAndrew RuszkiewiczNam Quoc NguyenPublished in: JGH open : an open access journal of gastroenterology and hepatology (2020)
Given the high specificity and PPV of positive IgG4 staining in esophageal biopsies for EoE, this can be a useful marker to distinguish the disease from GERD.