LOWER ESOPHAGEAL RING TREATED BY PNEUMATIC DILATATION.
D003680:Deglutition Disorders; D004106:Dilatation; D004935:Esophageal Diseases; D004940:Esophageal Stenosis; D006801:Humans; D013812:Therapeutics
DEGLUTITION DISORDERS; ESOPHAGEAL STENOSIS; THERAPEUTICS