Operation for sigmoid oesophagus.
D004931:Esophageal Achalasia / Q000150:complications / Q000601:surgery; D004935:Esophageal Diseases / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery*; D004947:Esophagus / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D008722:Methods; D008875:Middle Aged; D011859:Radiography