Achalasia of the cricopharyngeal sphincter.
D003680:Deglutition Disorders; D004931:Esophageal Achalasia; D006801:Humans; D007817:Laryngeal Cartilages; D009132:Muscles; D010608:Pharyngeal Diseases; D010614:Pharynx
DEGLUTITION DISORDERS; LARYNGEAL CARTILAGES; PHARYNX/diseases