Epiphrenic and middle esophageal diverticula: A rare cause of esophageal dysphagia. Esophageal high resolution manometry findings.

Esophageal diverticula (ED) constitute a rare pathology, with a prevalence ranging between 0.06% and 4% (1,2). According to its anatomical location it is classified as pharyngo-esophageal, middle esophageal and epiphrenics ED (3). The pathophysiologic mechanism differs in diverticula caused by traction, due to an inflammatory process involving the esophagus, or pulsion, associated with a concomitant motility disorder (4-6).