Zenker’s Diverticulum - A barium swallow examination showed stasis of barium in the upper esophagus with an outpouching lesion anterior to the C5 and C6 vertebrae (arrow). Upper gastrointestinal endoscopy revealed a pharyngoesophageal diverticulum, or Zenker’s diverticulum. Zenker’s diverticula are herniations of the hypopharynx through a defect in Killian’s triangle, an area bound by the inferior pharyngeal constrictor muscles and cricopharyngeus muscles. #Clinical #Radiology #GI #Zenker #Pharyngoesophageal #Diverticulum #KilliansTriangle #NEJM
