This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Esophageal Motility Disorders, Subject name: Surgery
[{'content': 'Cork screw esophagus is seen in - \nSelect and explain. \nA. Diffuse esophageal spasm, B. Achalasia cardia, C. CA esophagus, D. Globus hystericus', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Diffuse esophageal spasm o Radiological appearances of diffuse esophageal spasm have been described as:Curling esophagusCorkscrew esophagus orPseudodiverticulosiso Diffuse esophageal spasm is a motor disorder of esophagus characterized by repetitive simultaneous non-peristal tic contractions.o Symptoms are substernal chest pain and/or dysphagiao Diagnosed by manometry", 'role': 'assistant'}]