A dislodged tooth remained hidden in a Zenker's Diverticulum: A case report

A Zenker’s diverticulum is the rarest type of gastrointestinal diverticulum and is located immediately above the upper esophageal sphincter. Here we report the case of a dislodged tooth that entered and remained hidden in a Zenker’s diverticulum, and combined use of endoscopy and X-ray fluoroscopy was useful for diagnosis and treatment. To our knowledge, this is the first report of a dislodged tooth located in a Zenker’s diverticulum in the perioperative period.