Barrett's oesophagus following Heller's myotomy.
D001471:Barrett Esophagus / Q000209:etiology*; D004931:Esophageal Achalasia / Q000601:surgery*; D004935:Esophageal Diseases / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications