This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oesophagus, Subject name: Surgery
[{'content': 'Cork-screw appearance of esophagus: \nSelect and explain. \nA. Achalasia cardia, B. Cancer esophagus, C. Schatzki ring, D. DES', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) DESRef: Bailey and Love 26th edition, Page 1017 Diffuse Esophageal Spasm:* Hyper Motility disorder characterized by chest pain and dysphagia* Most common finding is cork screw esophagus in lower 2/3rd esophagus commonly.* Medical treatment is primary: Calcium channel blockers, vasodilators, endoscopic dilatation* Long myotomy up to arch of aorta is done in cases with dysphagia only. Chest pain will not improve with surgery', 'role': 'assistant'}]