title: Achalasia and diffuse esophageal spasm.
mesh_terms: D003680:Deglutition Disorders / Q000503:physiopathology; D004931:Esophageal Achalasia / Q000150:complications / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery / Q000628:therapy; D004938:Esophageal Neoplasms / Q000209:etiology; D004943:Esophagogastric Junction / Q000503:physiopathology; D005764:Gastroesophageal Reflux / Q000209:etiology; D006801:Humans; D008365:Manometry; D010146:Pain / Q000503:physiopathology; D011859:Radiography