[Intermittent dysphagia produced by a "ring of the lower esophagus"].
D003680:Deglutition Disorders / Q000209:etiology* / Q000628:therapy; D004931:Esophageal Achalasia / Q000150:complications; D004940:Esophageal Stenosis / Q000150:complications / Q000209:etiology*; D005260:Female; D006801:Humans
Disfagia intermittente da "anello esofageo inferiore".