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A Schatzki ring or SchatzkiâGary ring is a narrowing of the lower esophagus that can cause difficulty swallowing (dysphagia).The narrowing is caused by a ring of mucosal tissue (which lines the esophagus) or muscular tissue. Schatzki ring or SchatzkiâGary ring is a narrowing of the lower esophagus that can cause difficulty swallowing (dysphagia).
Schatzki Ring. Author: Rajeev Vasudeva, MD; Chief Editor: Julian Katz, MD more... Background. Since the 1950s, several investigators have published reports of patients with dysphagia who had associated lower esophageal ringlike constrictions, but each investigator had a different opinion as to the cause and nature of these rings.