Esophageal Diverticula By Kristle Lee Lynch, MD, Perelman School of Medicine at The University of Pennsylvania Reviewed / Revised Mar 2022 | Modified Sep 2022 View Patient Education Symptoms and Signs Diagnosis Treatment Topic Resources Esophageal Diverticula Zenker Diverticulum Traction Diverticulum An esophageal diverticulum is an outpouching of mucosa through the muscular layer of the esophagus.