Mucosal bridge, endoscopically observed, is a cord-like mucosal connection across the lumen. The bridge is very elastic and stretches easily, unlike granulation tissue. Mucosal bridges of the esophagus have been occasionally described in various circumstances, particularly in congenital or acquired origin as the inflammatory diseases. The occurrence of mucosal bridges due to inflammatory process may arise anywhere from the esophagus to the colon. It has been more frequently reported in the colon than in the esophagus, stomach, and duodenum. We experienced four cases of esophageal mucosal bridges and three of them were accompanied by esophageal diverticulum. We report these cases with a review of relevant literatures. (Korean J Gastrointest Endose 16: 969-974, 1996)