Esophageal intramural pseudodiverticulosis (EIPD) is a rare disorder in which many small pouches are formed within the esophageal submucosa. On endoscopic examination, the orifices of these pouches are observed as small holes on the mucosal surface. The disease was first described by Mendl et al, and histopathological examination of subsequent cases disclosed that these pouches consist of dilated ducts of the submucosal glands. During endoscopic examination of the esophagus of a patient with EIPD, we observed for the first time active opening and closing movements of the mucosal orifices of EIPD.
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