Zenker's diverticulum

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[edit] Discussion of Zenker's diverticulum

  • Zenker diverticulum is a pulsion pseudo-diverticulum
  • Occurs posteriorly in the mid-line just proximal to the cricopharyngeus.
  • Results from herniation of mucosa and submucosa through the dehiscence of Killian, a focal weakness in the hypopharynx at the normal cleavage plane between the fibers of the inferior pharyngeal constrictor and the cricopharyngeus.
  • This phenomenon may lead to the creation of a sac with a narrow neck that can trap food and liquid
  • May result in dysphagia, halitosis, and regurgitation.


  • Most commonly in the elderly. More than 50% of affected patients present in the seventh or eighth decade of life

[edit] Imaging Findings for Zenker's diverticulum

[edit] Fluoroscopy

  • Outpouching arising from the midline of the posterior wall of the distal pharynx near the pharyngoesophageal junction.
  • Best identified during swallowing and is best seen on the lateral view, on which the diverticulum is typically noted at the C5-6 level.

[edit] Images

Patient #1

[edit] See Also

[edit] External Links

Goldminer: Zenker's diverticulum

[edit] References for Zenker's diverticulum