Symptomatic lower esophageal rings--treated endoscopically.
D000368:Aged; D003680:Deglutition Disorders / Q000628:therapy; D004940:Esophageal Stenosis / Q000628:therapy*; D004945:Esophagoscopy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged