Zenker diverticulum and Schatzki ring

Discussion:

Zenker diverticulum, also known as a pharyngeal pouch, is a posterior outpouching of the hypopharynx, just proximal to the upper esophageal sphincter.
A Schatzki ring is symptomatically narrow esophageal B-ring occurring in the distal esophagus and usually associated with a hiatus hernia

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