Zenker's diverticulum classification
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief:
Overview
The three different types of the esophageal diverticula are as follows Phrenoesophageal (Zenker's diverticulum-70%), Epiphrenic, Thoracic and mediastinal.
Classification
- Esophageal diverticula are classified on the basis of location into three types[1][2][3]
- Almost all esophageal diverticula are acquired pulsion diverticula.
1. Phrenoesophageal (Zenker's diverticulum-70%)
- ZD is a defect over the Killian's triangle, a point of weakness in the muscular wall of the hypopharynx
2. Epiphrenic (20%)
- Epinephric diverticula result either from hypertonia of the lower esophageal sphincter (esophageal achalasia)
3. Thoracic and mediastinal (10%)
- Thoracic diverticula are probably more often of a congenital than traction origin.