Dysphagia due to the lower oesophageal ring.
D003680:Deglutition Disorders; D004940:Esophageal Stenosis; D004947:Esophagus / Q000002:abnormalities; D006801:Humans; D013902:Radiography, Thoracic
DEGLUTITION DISORDERS; ESOPHAGEAL STENOSIS; THORACIC RADIOGRAPHY