title: [Middle esophageal ring].
mesh_terms: D003937:Diagnosis, Differential; D004940:Esophageal Stenosis / Q000151:congenital*; D004945:Esophagoscopy; D004947:Esophagus / Q000002:abnormalities*; D005260:Female; D006801:Humans
vernacular_title: Anillo esofágico medio