Endocrine Abstracts

Introduction: Proton pump inhibitors (PPIs) are widely used for treating various upper gastrointestinal disorders. A well-known side effect of PPI therapy that may cause serious differential diagnostic problems is the elevation of serum chromogranin A (CgA).Objective: We report a case with highly elevated serum CgA in a patient with bilateral adrenal adenomas that was clearly associated with PPI therapy. Suspension of PPI intake for a few days resulted i...