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Background: Sore throat is a common complaint for patients presenting to the emergency department (ED). Although most are caused by viral and bacterial sources, an ingested foreign body must be considered in the right patient population. Retained foreign bodies occur in both children and adults. In children, the objects are usually non-food items, whereas adults are more likely to have impacted food boluses. Typically, patients present acutely, and chronic foreign bodies are rare, especially in adults., Objective: We use an unusual presentation of a retained foreign body in a previously undiagnosed Zenker diverticulum to review ingested foreign bodies and Zenker diverticuli., Case Report: We report the case of an 82-year-old woman who presented to the ED with a chief complaint of 12 h of worsening pharyngitis and odynophagia. She reported she had a capsule endoscopy performed approximately 4 months earlier during which the device had malfunctioned and no images were transmitted from beyond the esophagus. A soft tissue film of the neck showed the endoscopic capsule retained at the level of the clavicles. Esophagogastroduodenoscopy demonstrated a previously undiagnosed Zenker diverticulum containing the endoscope capsule. This was subsequently removed with laryngoscopy., Conclusion: Complaints related to sore throat commonly have a simple explanation. Recurrent symptoms and a physical examination inconsistent with common explanations require the differential to be broadened and less common causes considered., (Copyright © 2013 Elsevier Inc. All rights reserved.)