Esophageal Web (Plummer-Vinson Syndrome; Paterson-Kelly Syndrome; Sideropenic Dysphagia) By Kristle Lee Lynch, MD, Perelman School of Medicine at The University of Pennsylvania Reviewed / Revised Mar 2022 | Modified Sep 2022 View Patient Education Topic Resources Esophageal Web An esophageal web is a thin mucosal membrane that grows across the lumen of the upper esophagus and may cause dysphagia.