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
 Imaging Findings for Zenker's diverticulum
- 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.
 See Also
 External Links
 References for Zenker's diverticulum
- Jeffrey P. Kanne, Charles A. Rohrmann, Jr, and Joel E. Lichtenstein. Eponyms in Radiology of the Digestive Tract: Historical Perspectives and Imaging Appearances: Part I. Pharynx, Esophagus, Stomach, and Intestine. RadioGraphics 2006 26: 129-142.
- Spencer Sincleair. E-medicine article