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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).
Schmorl nodes, classically known as intravertebral disc herniations, were first described by Schmorl in 1927 []. Schmorl nodes represent a herniation or an extrusion of the intervertebral disc nuclear material through the vertebral body endplate, with displacement of this material into the adjacent vertebral body [].