title: The radiology of achalasia of the oesophagus.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004931:Esophageal Achalasia / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography