title: Esophageal achalasia and secondary megaesophagus in a dog.
abstract: A 5-year-old, castrated male, golden retriever was presented with a history of regurgitation. An esophagram revealed normal peristalsis with failure of the lower esophageal sphincter to open, supporting the diagnosis of esophageal achalasia. Prior to surgery, the dog developed megaesophagus. Heller's esophagomyotomy resolved the clinical signs and the esophageal dilation.
authors.affiliation: Department of Veterinary Clinical Sciences, Purdue University, 1248 Lynn Hall, West Lafayette, Indiana 47907, USA.
authors.forename: Pedro A
authors.initials: PA
authors.lastname: Boria
authors.forename: Cynthia R L
authors.initials: CR
authors.lastname: Webster
authors.forename: John
authors.initials: J
authors.lastname: Berg
mesh_terms: D000818:Animals; D004108:Dilatation, Pathologic / Q000175:diagnosis / Q000601:surgery / Q000662:veterinary; D004283:Dog Diseases / Q000175:diagnosis* / Q000601:surgery; D004285:Dogs; D004931:Esophageal Achalasia / Q000175:diagnosis / Q000601:surgery / Q000662:veterinary*; D004943:Esophagogastric Junction / Q000503:physiopathology; D008297:Male; D010528:Peristalsis; D013902:Radiography, Thoracic / Q000662:veterinary