In Zenker’s diverticulum, a bulge or pouch forms at the top of the tube that connects the throat to the stomach, called the esophagus. The condition is not common. Connected bands of muscle that work to pass food from the mouth to the stomach make up the esophagus.
Over time, the bulge of Zenker’s diverticulum can get bigger. Food, pills and even thick mucus can get stuck in the pouch instead of going through the esophagus. This can lead to problems with eating and other complications.
The cause of Zenker’s diverticulum is not known. It happens most often to men older than 60. Treatment for symptoms of Zenker’s diverticulum often is surgery.