title: [Idiopathic cardial achalasia (etiology, pathogenesis, endoscopic differential diagnosis, and treatment)].
authors.forename: Iu V
authors.initials: IuV
authors.lastname: Vasil'ev
mesh_terms: D003937:Diagnosis, Differential; D004931:Esophageal Achalasia / Q000175:diagnosis / Q000209:etiology / Q000628:therapy; D004945:Esophagoscopy; D006801:Humans