Surgical treatment of the lower esophageal ring.
D003680:Deglutition Disorders; D004940:Esophageal Stenosis; D004947:Esophagus / Q000002:abnormalities; D006548:Hernia, Diaphragmatic; D006801:Humans
DEGLUTITION DISORDERS; DIAPHRAGMATIC HERNIA; ESOPHAGEAL STENOSIS