title: Diseases associated with or mimicking achalasia.
abstract: Achalasia may be associated with some rare systemic diseases. In addition, a few conditions produce a syndrome often indistinguishable from achalasia. Most of these diseases are malignant and should be considered in the differential diagnosis of idiopathic achalasia.
authors.affiliation: Department of Gastroenterology, Cleveland Clinic Foundation, Cleveland, Ohio 44195, USA.
authors.forename: E
authors.initials: E
authors.lastname: Achkar
mesh_terms: D014355:Chagas Disease / Q000150:complications* / Q000175:diagnosis*; D003937:Diagnosis, Differential; D004931:Esophageal Achalasia / Q000175:diagnosis* / Q000209:etiology*; D030342:Genetic Diseases, Inborn / Q000175:diagnosis*; D006801:Humans; D007418:Intestinal Pseudo-Obstruction / Q000150:complications* / Q000175:diagnosis*; D009369:Neoplasms / Q000150:complications* / Q000175:diagnosis*