Cricopharyngeal achalasia: an uncommon surgical syndrome.
D000368:Aged; D003680:Deglutition Disorders / Q000209:etiology*; D005260:Female; D006801:Humans; D007817:Laryngeal Cartilages; D007818:Laryngeal Diseases / Q000601:surgery*; D008297:Male; D008875:Middle Aged