Diverticulums - a saccular diverticulum of a mucosa and under a mucous layer in defects of a muscular environment of a digestive tube. Diverticulums happen congenital and got. The got diverticulums arise due to inflammatory changes in a wall of an organ and surrounding tissues. Diverticulums of an esophagus are localized in a cervical department (70 %), at a level of a bifurcation of a trachea (20 %) and above a diaphragm (10 %).

The cervical diverticulum results from delicacy of a back wall of pharyngoesophageal transition on the one hand and dyskinesias of a crico-pharyngeal muscle - with another. Possibly, the reason is disturbance of coordination of reductions of pharynx and the crico-pharyngeal muscle operating as the top sphincter of an esophagus. As a result of premature reduction of the top sphincter there is a rising pressure, and the mucosa evaginates, forming a diverticulum.